bbnova
10-01-2008, 05:10 PM
OK guys, here ya go. Everything that was edited is in red. There were a few things that were deleted from these rules so if you compare these to the current rules you will see what was deleted. I only did what was discussed in Atlanta for weight adders and subtractors. The base weight and jet changes were done only after discussions with the affected combos that currently run in this class. Feel free to give input on these rules as it is in the best interest of the class.
ARP - NOSTALGIA PRO STREET
NMCA SERIES 2008 RULES
General Overview
Nostalgia Pro Street vehicles are designed for American production passenger cars and trucks, 1950 & later, back half and tube chassis vehicles that emulate the famous “Pro Street” vehicles of the early 90’s that defined the Street movement. Nostalgia Pro Street vehicles are permitted small block and big block engines with nitrous oxide as the only permitted power adder on certain combinations. Nostalgia Pro Street racing will be conducted at all drag racing events (see race schedule).
Qualifying Information, Ladder Type, & Tree
All Run, NHRA Sportsman Ladder, Pro .400 tree, Heads-Up.
Weight Breaks
ENGINE INDUCTION WEIGHT MAX CUBIC INCH
Big Block Naturally Aspirated 2725 640
Big Block Nitrous Oxide 3100 480
Big Block Nitrous Oxide 3200 530
Big Block Nitrous Oxide 3200 640
Small Block Nitrous Oxide 2750 460
Small Block Nitrous Oxide 2850 525
Maximum Cubic Inch - 650
Any combo that shows to have an advantage at any NMCA event, that combo can be readjusted at any time.
Any vehicle that does not utilize the stock core support must add 25lbs.
Clutch-equipped transmissions must add 150 pounds to listed base weight. See section 2.12
OEM Style Cylinder Head (stock port layout, height, valve angle +/- 2 degrees) may deduct 100 lbs.
1950 – 1974 body styles and all Trucks–deduct 75 pounds from base weights.
Tube chassis vehicle (or back-half vehicles not meeting back-half requirements) must add 100 pounds to base weight. See section 1.16, 3.4.
Tube chassis vehicles permitted with tubular front clip & purpose built front suspension, required to add 100 lb to base weight.
Any “back half” vehicle that does not fit front suspension/chassis regulations must add 50 lbs. to base weight.
Fuel-injected entries must add 50 pounds to base weights. See section 1.20.
Big Block Nitrous entries equipped dual carburetor-equipped entries must add 50 lbs. See section 1.19.
All Small block engines with a canted valve head must add 100lbs.
*If actual cubic inch is more than base cubic inch listing, there will be a weight penalty of 7.0 pounds per cubic inch assessed to base weights, up to the maximum cubic inch permitted in the class.
Note: All weights are with driver & rounded down to the five pound increment. Ex: A calculated weight of 2842 would be required to weight 2840 with driver at scales.
Accepted Products:
Accepted Products Deadline: NMCA will accept requests from manufacturers to have new products considered for addition to 2008 accepted lists only up until November 10, 2008. After this date, NMCA will consider manufacturer requests for new products for the 2009 season.
1: ENGINE
1.1 COOLING SYSTEM
RADIATOR: OEM production-style or aftermarket radiator is required and must be mounted in front of engine.
Water pump: Any aftermarket (belt drive or electric drive) pump permitted.
COOLING FANS: Any permitted.
1.2 ENGINE
ENGINE: Engine must be a V-8 automotive type engine. Any internal modifications are permitted. Cross breeding of an engine to a different make of body permitted. Engine swapping permitted during event. Big block engines are limited to a maximum of 640 cubic inches and must use stock OEM block bore spacing and cylinder head bore spacing for OEM engine type. Small block engines are limited to a maximum of 525 cubic inches and must use stock OEM block bore spacing and cylinder head bore spacing for OEM engine type.
OEM engine type refers to the OEM type of engine a racer is using, not the manufacture of the block: such as big block Chevrolet, small block Chevrolet, big block Ford, big block Chrysler, etc. In addition if an original OEM engine type block was a 90 degree block, the block the racer uses must be a 90 degree block.
Water injection is prohibited.
1.3 EXHAUST
EXHAUST: All entries allowed to use tubular headers. Adapter plates permitted to bolt headers to cylinder head. Exhaust must be directed out of car body, away from driver and fuel tank.
1.3a) HEADERS & COLLECTORS: Any headers and/or collectors permitted.
1.3b) EXHAUST TUBING/SIZE: All exhaust gases released from engine must pass through muffler(s). Any exhaust tubing size permitted.
1.3c) TAILPIPE & EXHAUST RULES: Not required.
1.3d) MUFFLER REQUIREMENTS: Mufflers required. Commercially available, conventional style (generally available through retail locations) mufflers required. A maximum of two (2) mufflers is allowed. A maximum of one (1) inlet and one (1) outlet is permitted. Collector-style mufflers are permitted.
1.5 FUEL-DELIVERY SYSTEM
DELIVERY SYSTEM: Electric or mechanical fuel pumps permitted. Pressure regulators, and any line size permitted. All fuel lines must originate and return to a single, non-segmented, fuel cell or OEM fuel tank. Fuel pump must shut off with a master electrical switch. Any method of artificially heating or cooling fuel prohibited (cool cans, ice, wet rags, Freon, etc.). A valve for removal of fuel (gasoline) during technical inspections is mandatory. Valve must be installed between carburetor/injection and regulator, and should be installed in such a manner that allows a cup to be placed to catch fuel removed from the line. Exit of valve should be capped or plugged in addition to being closed for added safety.
Aftermarket/fabricated fuel tank or cell permitted. Must be located outside driver’s compartment and inside body lines. If tank or fuel filler is inside trunk, a bulkhead of minimum .032” aluminum or .024” steel must be used between trunk and driver compartment, and tank must be vented to outside of car. When used, fuel cells must have a metal box protecting the part of the fuel cell that is outside the trunk floor.
Non-metallic fuel cells or tanks must be grounded to frame. See NHRA General Regulations Section 1.5.
1.6 GASOLINE
GASOLINE: Gasoline as outlined here is the only acceptable fuel for use in this eliminator. The NMCA Racing Association reserves the right to check gasoline at any time during competition. Gasoline, as defined by the NHRA rulebook, is a mixture of hydrocarbons only. The average dielectric constant (D.C.) for the hydrocarbons that compromises gasoline is 2.025. This is defined as a reading of “0” on the fuel-check meter. NMCA allows no greater reading than a “0” on the fuel-check meter. Failure to pass fuel check is grounds for disallowance of the run during competition and disqualification from the event during eliminations.
NITROUS OXIDE
NITROUS OXIDE: Nitrous oxide entries are restricted to a single stage fogger or a single stage nitrous plate (or dual, single stage, nitrous plates for dual carb entries only). Nitrous line size is unrestricted. Nitrous jet limitations for big block nitrous engines over 530ci are as follows: Fogger: .030 maximum, Single plate: .096 maximum; Dual plates (two carbs only): .069 maximum. Big block nitrous engines under 530ci permitted to utilize a fogger system with a .046 maximum jet size. All small block nitrous combinations permitted to utilize a fogger system with a .044 maximum jet size. Push systems prohibited. The use of agents other than nitrous oxide as part of, or mixed in, the system are prohibited. Nitrous oxide may not be used in conjunction with any other power adder. If entry is entered as a non-nitrous entry, all solenoids, lines, fittings, and bottles must be removed prior to technical inspection and any competition runs.
SINGLE PLATE: The use of conventional style, single (one carb) or dual (two carbs), nitrous plates, bolt on style, with a maximum of 2 spray bars (1 nitrous - 1 fuel bar maximum) per plate. “X” bar or cross bar style nitrous systems prohibited. Progressive systems permitted. See SOLENOIDS 1.22 for restrictions to solenoids.
SINGLE FOGGER: The use of a conventional style, single stage, and nitrous fogger system permitted. Limited to one nitrous nozzle, and one nitrous orifice, per cylinder. Progressive systems permitted. See SOLENOIDS 1.22 for restrictions to solenoids.
PLENUM SYSTEM: The use of a plenum spray system is permitted with a maximum of 2 spray bars (1 nitrous - 1 fuel bar maximum). Progressive systems permitted. See SOLENOIDS 1.22 for restrictions to solenoids.
PURGE: Nitrous purge system permitted, purge must exit at the cowl area away from inlet area of the hood or hood scoop. Purge tube must exit via a straight tube a minimum length 4 inches protruding from the cowl, and may not be within 12 inches of the opening of the hood. Plume or nail head at end of line is prohibited.
1.9 OIL SYSTEM
OILING SYSTEM: Any oiling system permitted. Any vacuum pump and/or evacuator system (header, or otherwise) permitted. Any oil pan permitted.
1.10 SUPERCHARGER
SUPERCHARGER: Prohibited.
1.15 BLOCK
BLOCK: Big block and small block engines equipped with nitrous oxide are restricted to stock OEM bore spacing. Naturally aspirated big blocks permitted a maximum bore spacing of 4.900”. Any internal modifications permitted. Any commercially available cast iron or aluminum engine block is permitted which fits these specifications.
1.16 ENGINE LOCATION/MOUNTS
ENGINE LOCATION (ALL EXCEPT TUBE CHASSIS): Maximum allowable engine setback from the centerline of the number-one spark-plug hole to the centerline of the front spindle is 4 inches, except in those vehicles in which the engine was factory installed at a distance greater than 4 inches behind the spindle. In those cases, the engine setback may be no further back than the stock location. Engine plates and solid engine mounts permitted. Block and/or heads must not touch firewall or cowl area.
Engine Location (TUBE CHASSIS): maximum allowable engine setback is no more than 10% of the wheelbase as measured from centerline of front spindle to center of spark plug hole. Engine plates and solid engine mounts permitted. Block and/or heads must not touch firewall or cowl area.
1.17 HEADS
HEADS, GENERAL: Nostalgia Pro Street is intended for ported, high performance “street/strip and race” cast iron or aftermarket aluminum cylinder heads. Big block and small block cylinder heads are restricted to those originally designed as “stock bore spacing” cylinder heads that are originally produced with a intake valve angle no less than 11 degrees. Cylinder heads are restricted to a minimum valve angle of 11 degrees during competition. Small block engines must maintain standard OEM valve layout design (no substituting canted valve for inline head, etc.)
1.17a) HEADS, PERMITTED: Original manufacture, generally available heads, accepted by NMCA, permitted. Billet or fabricated heads prohibited. Cylinder heads must be overhead valve single spark plug per cylinder design. One-off or custom made cylinder heads prohibited. Internal port areas of cylinder heads may be welded or epoxied, but heads must maintain standard “as produced” valve layout design, valve cant, etc. (no fabricating a canted valve design from an inline head, etc.) All small block combos can run a canted valve head with weight adder.
1.17b) HEADS, MASS PRODUCED: Only mass produced, commercially available, NMCA accepted, commonly available, cast aluminum or cast iron cylinder head is permitted. Low volume, one off, aluminum cylinder heads prohibited.
1.17c) HEADS, BOLT PATTERN: Any permitted.
1.17d) VALVE JOB: Any valve job permitted.
1.17e) RUNNER/COMBUSTIONS CHAMBER COATINGS: Any permitted.
1.17f) HEADS, PORTING: Permitted.
1.17g) HEADS, WELDING/EPOXY: Permitted.
1.17h) HEADS, VALVES: Any OEM or aftermarket valve permitted. Bronze lined or replacement guides permitted.
1.17i) HEADS, MILLING: No regulations limiting milling. All cylinder heads are restricted to a minimum valve angle of 11 degrees during competition.
1.17j) HEADS, PUSHROD SLEEVES: Permitted. Cylinder head may be cut for larger push rods.
1.17k) HEADS, COMBUSTION CHAMBER VOLUME: No regulations limiting combustion chamber volume.
1.17l) HEADS, PORT PLATES/ADAPTER PLATES: Port plates/adapter plates permitted on intake & exhaust side of cylinder head.
1.18 VALVETRAIN
1.18a) CAMSHAFT: Any permitted.
1.18b) LIFTERS: Any permitted.
1.18c) LIFTER BORES: Lifter bores permitted to be bushed.
1.18d) VALVE LOCK: Any permitted.
1.18e) RETAINERS: Any permitted.
1.18f) ROCKER ARMS: Any permitted.
1.18g) CAMSHAFT DRIVE SYSTEM: Any permitted.
1.19 CARBURETORS
CARBURETORS: Single or dual carburetors accepted on all combinations. Split carburetors prohibited (example: a Dominator, split and offset into two two-barrels). Dual carburetor-equipped entries must add 50 lbs. Naturally aspirated and nitrous small block entries may utilize dual carbs without weight penalty. Any size carb(s) permitted. Aerosol Carburetors Prohibited.
1.20 FUEL INJECTION
Fuel Injection: Fuel injection permitted, must be electronic.
Fuel-injected entries must add weight to listed base weight. Single or dual throttle bodies (single throttle blade or single four-barrel style) accepted. Any four-barrel style throttle body must be arranged in a conventional manner (grouped together as a carburetor).
1.21 INTAKE MANIFOLD
INTAKE MANIFOLD: Mass produced, commercially available, cast aluminum, carburetor type intake manifolds with a common plenum required for nitrous combinations. Single carb style or single/dual carb tunnel ram style cast intake accepted. Sheet metal fabricated or carbon fiber manifold accepted for all combinations with no weight adder. Porting, minor welding or epoxy on interior of cast intake manifold permitted. No welding or epoxy permitted on exterior of intake manifold for any reason, with the sole exception of nitrous/fuel injector bungs.
1.22 SOLENOIDS
SOLENOIDS: Maximum of 4 solenoids (2 – nitrous, 2 – fuel). One inline “safety” solenoid permitted for progressive systems only.
1.23 TURBOCHARGERS
TURBOCHARGERS: Prohibited
1.24 AFTERCOOLER/INTERCOOLER
AFTERCOOLER/INTERCOOLER: Prohibited.
1.25 POWER ADDERS
POWER ADDERS: Any single power adder (nitrous oxide & supercharger) permitted with engine combination. See sections 1.9, 1.12, & 1.23.
1.26 CRANKSHAFT
CRANKSHAFT: Any crankshaft permitted. Multi-piece or composite crankshafts prohibited.
1.27 CONNECTING RODS
CONNECTING RODS: Steel, aluminum, or titanium connecting rods required. Composite connecting rods prohibited.
1.28 HEAD GASKETS & QUENCH AREA
HEAD GASKETS & QUENCH AREA: No restrictions.
1.29 PISTONS, PINS, RINGS
PISTONS, PINS, RINGS: Any piston, pin, ring combination permitted.
1.30 BOOST CONTROLLERS
BOOST CONTROLLERS: Prohibited.
1.31 WASTEGATE & PRESSURE REGULATOR
WASTEGATE & PRESSURE REGULATOR: Prohibited.
1.32 VISIBLE COATINGS
VISIBLE COATINGS: Visible coatings are permitted where lubricants are present. Visible piston coating above the top ring is permitted. Visible coating of cylinder head runners, combustions chambers, and/or intake manifold runners/plenums permitted.
1.33 “O” RINGING OF BLOCK
“O” RINGING OF BLOCK: Permitted.
2: DRIVETRAIN
2.3 CLUTCH
CLUTCH: Clutch operation must be manually applied and disengaged with foot during run, without the assist of electric, hydraulic or pneumatic devices. Multi stage, variable release, or lock up type of any description is prohibited. Throwout bearing must release all fingers or levers simultaneously. Clutch (2 disk maximum) meeting SFI spec 1.1 or 1.2 mandatory.
2.4 DRIVESHAFT
DRIVESHAFT: Any permitted.
2.11 REAREND
REAREND: Any automotive type rearend permitted.
2.12 MANUAL TRANSMISSIONS
MANUAL TRANSMISSION: OEM or aftermarket transmissions with a maximum of 5 forward speeds permitted, including “clutchless” models. Any gear change must occur from direct action by the driver. Pneumatic, electric, hydraulic, etc. shifters prohibited. Torque converters not permitted with this type of transmission.
2.13 PURPOSE BUILT TRANSMISSIONS
PURPOSE BUILT TRANSMISSIONS: Any purpose built transmission with a maximum of 5 forward speeds utilizing a clutch permitted. Any purpose built transmission with 3 speeds or less utilizing a torque converter must add weight to listed base weight (see section 13). Any gear change must occur as a result of an internal function of the transmission or from direct action by the driver. Pneumatic, electric, hydraulic, etc. shifters prohibited. Clutch not permitted with this type of transmission.
2.14 AUTOMATIC TRANSMISSIONS
(OEM American transmissions or replicas of OEM American transmissions that use planetary gears)
AUTOMATIC TRANSMISSIONS: Any OEM American automatic transmission or a replica of an OEM American automatic transmission that uses planetary gears and torque converter permitted, three forward speeds maximum. Transmission-to-engine adapters are permitted. Lock-up transmissions/torque converters permitted. Trans brakes permitted. Automatic transmission entries run at listed base weights. Pneumatic, electric, hydraulic, etc. shifters prohibited. Any gear change must occur as a result of an internal function of the transmission or from direct action by the driver. Clutch not permitted with this type of transmission.
3: BRAKES & SUSPENSION
3.1 BRAKES
BRAKES: All cars must have front and rear hydraulic brakes. Automated brakes or any type of traction control is prohibited. Application and release of brakes must be a function of the driver’s foot. Line lock permitted on front wheels only. Any other electric, pneumatic, or hydraulic device in the system is prohibited.
3.2 SHOCK ABSORBERS
SHOCK ABSORBERS: each vehicle in competition must be equipped with one operative shock absorber for each sprung wheel. Shock absorbers may be either hydraulic or friction type, securely mounted and in good working order.
3.3 STEERING
STEERING: Any type steering permitted.
3.4 SUSPENSION, general
SUSPENSION, GENERAL: This eliminator is designed for “back half vehicles” with stock front frame rails, and stock type front suspension, and for “tube chassis vehicles”. A “back half vehicle” is defined as a vehicle which 1) maintains the stock front frame rails, stock radiator/core support area, and utilizes stock or stock type, direct replacement style front suspension and 2) maintains the stock firewall in the stock location. Rear suspensions are permitted to be stock, ladder bars, or 4-links. Coil over shocks are permitted. Tube chassis vehicles permitted with tubular front clip & purpose built front suspension, required to add 100 lb to base weight. Any “back half” vehicles that do not fit front suspension/chassis regulations must add weight to listed base weight.
NO FRONT WHEEL DRIVE CONVERSIONS PERMITTED IN THIS ELIMINATOR.
3.4 SUSPENSION, FRONT – BACKHALF TYPE CHASSIS
FRONT SUSPENSION:
3.4a) K-MEMBERS: Aftermarket K-Members permitted. K-member may be modified in oil pan area to allow oil pan enlargement or removal.
3.4b) STRUT TOWER/UPPER SHOCK MOUNTING POINTS: Factory OEM strut tower required. For 1978 and older vehicle model years, only OEM strut tower/shock tower may be removed in lieu of installing/using commercially available suspension kit (i.e., Heidt, Fatman, etc). Other sections of front suspension rules must be adhered to.
3.4c) CONTROL ARMS: OEM or tubular stock type control arms required which are attached in stock location.
3.4d) SHOCKS/STRUTS: Aftermarket struts and shocks permitted provided stock attachment location used.
3.4e) SPRINGS: Aftermarket springs permitted.
3.4f) COIL OVERS: Coil over shocks and struts permitted. Stock OEM mounting location required.
3.4g) CAMBER PLATES: Bolt on type camber plates permitted.
3.4h) SPINDLES: Accepted, bolt-on, commercially available aftermarket spindles permitted.
Back half vehicles that do not fit front suspension/chassis regulations may compete as tube chassis vehicle.
SUSPENSION, FRONT – TUBE CHASSIS
FRONT SUSPENSION: Purpose built front suspensions & tubular front clips accepted for competition, must add 100 lbs. to base weight.
3.4 SUSPENSION, REAR
REAR SUSPENSION: Stock and aftermarket type suspension, including leaf springs, stock 3 or 4 link, ladder bars, and aftermarket racing style 4-link suspension permitted. Rear coil-over shocks permitted.
3.4a) STOCK TYPE SUSPENSION: Stock type suspension may utilize aftermarket, direct replacement type suspension components including aftermarket replacement shocks, springs, leaf springs (may be moved inboard), and/or control arms. Aftermarket torque arms permitted. Aftermarket leaf spring kits permitted.
3.4b) 4-LINKS: Racing style 4 link suspensions using fabricated front cross member support permitted. Track locators permitted.
3.4c) LADDER BARS: Welded on ladder bars using fabricated front cross member support permitted. Ladder bars permitted.
3.4d) REPLACEMENT CONTROL ARMS & LEAF SPRINGS: Replacement upper and lower control arms and leaf springs permitted. Control arms may use any type bushing, bearing, or rod end. Control arms may be adjustable to any length.
3.4e) PANHARD BARS: Permitted. Panhard bars must be located aft of rearend housing. Panhard bars may be welded.
3.4f) SWAY BARS: Aftermarket or factory sway bars permitted. Aftermarket sway bars may be welded to both chassis and rearend housing.
3.4g) TORQUE ARMS: Permitted.
3.4h) REAR SHOCKS & SPRINGS: Any permitted, including coil over shocks and springs.
3.6 WHEELIE BARS
WHEELIE BARS: All wheelie bars must have a non-metallic wheel. Wheels must turn freely at starting line. Wheel preload is prohibited. Using the wheelie bar as a “fifth wheel” sensing device is prohibited. Wheelie bars must be fixed. Hydraulic, pneumatic, electronic, etc. or any other adjustment or movement during run is prohibited.
4:FRAME
4.4 FRAME
FRAME: Stock, unaltered front frame rails required for back half vehicle. For back half vehicles, frame rails may be replaced rearward of the firewall. For tube chassis type vehicles, purpose built frame rails permitted for entire length of vehicle. If the stock rear frame is notched, it must be reinforced in a manner acceptable to NHRA. Subframes on unibodied cars may be joined under car. Maximum size material to be used; 2” x 3” x 0.125” rectangular tubing or 1 5/8 O.D. inch round tubing (.118MS or .083CM). If connector protrudes through floor, floor must be completely welded to connector. Rear subframe may be moderately moved in or “C’d” for tire clearance. Rear subframes may be constructed of 2” x 3” rectangular material with 0.083” wall thickness or 1.625” O.D. x .083” inch wall chromemoly (.118” wall mild steel) round tubing.
4.5 GROUND CLEARANCE
GROUND CLEARANCE: Minimum 3 inches from front of vehicle to 12 inches behind centerline of front axle; 2 inches for remainder of vehicle, except oil pan and exhaust headers.
4.12 WHEELBASE
WHEELBASE: Entries must retain stock wheelbase within + or - 1 inches of stock. Maximum variation from left to right and front to back of 1 inch.
5: TIRES AND WHEELS
5.1TIRES
TIRES–FRONT: Front tires must have a minimum tread width of 4.5 inches.
TIRES–REAR: Street type or racing slicks permitted. Maximum rear tire sidewall designation allowed in competition for racing slicks is 35.0/17-16. DOT tires may also be used with a maximum rear sidewall designation of 35/22.5-16. Tire tread may not extend outside fenders.
5.2 WHEELS
WHEELS: Spindle-mount front wheels permitted.
6: INTERIOR
6.1 INTERIOR
Interior: Must maintain stock appearance; including factory OEM style dashboard. Heater/air conditioners may be removed. Master cylinder may be relocated to accommodate brake pedals & linkage.
6.4 CARPET
CARPET: Floor and tunnel where visible must be upholstered or carpeted. Aftermarket wheel tubs do not require carpeting. Headliner required.
6.5 SEATS
SEATS: Upholstered OEM or aftermarket upholstered seats (2) required. Seat location may be altered, but seatback not permitted behind the plane of the rear doorjamb. For tube chassis vehicles only, seat location may be altered, but seatback not permitted to be greater than 4-inches behind the plane of the rear doorjamb. Rear seat may be removed when roll bar/roll cage is installed; area must be carpeted or upholstered.
6.6 DOOR PANELS
DOOR PANELS: Stock OEM or replacement type door panels required.
6.7 STEERING COLUMN
STEERING COLUMN: Aftermarket steering column permitted. Removable steering wheel permitted.
6.8 GAUGES
GAUGES: Aftermarket gauges may be installed in factory or OEM
style dash.
6.9 PEDALS
PEDALS/PEDAL LOCATION: Aftermarket pedals and linkage are permitted, but must remain in stock location in foot well.
7: BODY
BODY GENERAL: Nostalgia Pro Street is restricted to 1950 & newer American made rear wheel drive vehicles. Body dimensions and shape must be exact OEM stock, vehicle must retain original appearances and profiles for year and make of body. Panel cars prohibited. For the purpose of this eliminator, legal vehicles will be restricted to those that where factory line assembled, and must retain factory door jams, rockers, complete door mounting area (including the area beneath the A-pillar, which may be altered to facilitate lift off doors). Steel (or original OEM fiberglass) material required for quarter panels and roof. Aluminum or fiberglass material permitted for front fenders, hood, doors, deck-lid, and bumpers. Hood and/or trunk lid must be hinged or lift off. Hood, doors, and trunk lid must be attached separately and must be operable. One piece front ends (fenders and front valance/bumper) are permitted. Alterations or aerodynamic modifications such as “chopped tops”, “channeling”, “sectioning”, “shortening” or “scaling down” prohibited. Flaring or spreading of external fender lines prohibited. Body must be finished and painted.
If a convertible top is used as an entry, the use of ANY mechanism under or above the convertible top is not permitted.
Ex: Building a cover that would be located above or below the convertible top, using straps below or above the convertible top, etc.
Convertible tops need to be operational in all classes that the windows are required to operate.
All entries with convertible tops must compete with top up.
7.1 ADVERTISING
GRAPHICS: Sponsorship graphics, logos, lettering, and/or decals (for advertising or creative purposes) restricted to rear quarter panels, windows, Rocker panels, front fenders and hoodscoop only. No letters, decals, or sponsorship graphics to appear on doors, roof, hood, bumpers, or rear trunk lid.
CONTINGENCY DECALS: In order to be eligible for NMCA official contingency program, all contingency decals (or decals that are not contingency paying) are required to appear on the rear quarter windows or rear window only.
NMCA REQUIRED DECALS: The following decals are required for competition in NMCA events.
NMCA Windshield Decal – must be installed on top of windshield. This NMCA decal must be the only decal on top of windshield. Other vehicle sponsor decals may be placed at base of windshield.
NMCA 2008 Drag Racing Series “Side” Decals – must be installed on each side of vehicle on quarter windows.
Class Sponsor Decal – class sponsor decal must be installed on base of windshield on the passenger side.
Permanent Numbers – permanent numbers are required for competition in this class.
7.2 SPOILERS
REAR SPOILER: Rear spoilers permitted, may not extend more than 26 inches from the transition point with the body to the rear most portions. Rear spoiler may not be molded into body (Pro Mod Style).
Spoilers must be stationary during entire run. A positive locking device to prevent movement required. Spring loaded spoilers prohibited. Spoiler spill plates (if used) may be a maximum of 12” in height.
7.5 FIREWALLS
FIREWALL: Stock firewall in stock location required if back half vehicles, but notching and minor modifications permitted to stock firewall for engine clearance, exhaust, etc. Fabricated firewall permitted for tube chassis vehicle. For Chevrolet Corvette, only if OEM equipped with stock fiberglass firewall; firewall may be replaced with a flat steel firewall, no thinner than .024, located in the OEM stock location. Replacement steel firewall must be one piece, fully attached along perimeter, and permanent in nature.
7.6 FLOOR/TRUNK PAN
FLOOR: Floor/ trunk pan/transmission tunnel modifications are permitted. Replacing stock floor/trunk pan/transmission tunnel with a minimum of.024 inch thick steel or .032 inch thick aluminum permitted. Magnesium is prohibited.
7.7 HOOD/SCOOP
HOOD\SCOOP: OEM, or fiberglass hood and /or scoop permitted. Forward-opening or rear-opening scoops permitted. One opening only permitted. Induction must be completely covered by hood, bubble, or scoop. Hood must be separate and not be part of front fenders. Scoop need not be part of the vehicle hood.
7.9 WINDSHIELDS/WINDOWS
WINDOWS: OEM safety glass or NHRA-accepted safety glass, or 0.125” thick polycarbonate material, such as Lexan MR 4000 mandatory. Driver and passenger windows must be closed during racing. Bracing and/or rivets must not be visible from outside of vehicle. Window tint is prohibited forward of the “B” pillar.
7.10 BUMPERS
BUMPERS: Front and rear bumpers must be OEM or be duplicates of originals and may be made of steel or fiberglass. License plate frame holders are not permitted to extend beyond flat surface of front bumper. No body components, bumper add-ons, or body kits are permitted to be added to the vehicle with the intent of increasing the frontal distance of the bumper for the purposes of breaking the infrared beams.
7.11 FENDER SPLASH PANS
FENDER SPLASH PANS: Full, factory OEM or aftermarket inner fenders required. May be trimmed for header clearance.
7.12 GRILLE
GRILLE: Full factory stock grille required. Blocking of grille to prevent air passage is prohibited. Grill may not be fake, painted or airbrushed.
7.13 WHEELWELLS
INNER WHEELWELLS: Aftermarket wheeltubs permitted. Material used to add to the width of the inner wheelwell may be steel, aluminum, fiberglass, or carbon fiber.
OUTER FENDERS: Leading and trailing edges of fenders may be trimmed for tire clearance.
7.14 RAM AIR/ENGINE AIR PANS
RAM AIR: Any ram-air unit permitted. Headlights/taillights/hazard lights may not be removed/modified for air induction.
7.15 DOORS
DOORS: Driver and passenger doors must be functional and operable from inside and outside of vehicle. OEM, aluminum, or fiberglass replicas permitted.
7.16 AERODYNAMICS
AERODYNAMICS: Taping of any body parts, seams, or front end prohibited. Removal of side mirrors permitted.
7.17 BODY KITS
BODY KITS: Accepted, commercially available body kits permitted. Filling in the lower valance permitted. (taping not permitted).
7.18 COWL AREA
COWL AREA: Complete OEM cowl required for non-tube chassis vehicle. Cowl area may be notched if tube chassis weight break is used.
7.19 FRONT FENDERS/FRONT FASCIA
FRONT FENDERS/FRONT FASCIA: O.E.M. or aftermarket stock appearing front fenders made of steel, aluminum, or fiberglass permitted. Stock appearing front fascia required. May be one-piece.
8: ELECTRICAL
8.1 BATTERY
BATTERY: Battery may be relocated. Alternator not required.
8.3 IGNITION
IGNITION: Any battery operated ignition permitted. Any distributor drive system permitted.
8.5 STARTER
STARTER: All entries must be self-starting with on-board starter.
9: SUPPORT GROUPS
Bracket racing aids such as optical sensors, delay boxes, stutter boxes, etc. prohibited. Throttle stops prohibited. The application or use of any device, mechanical or electronic that permits the driver to ascertain the position of their vehicle in relation to the starting line is prohibited.
9.2 ONBOARD DIAGNOSTICS\DATA RECORDERSONBOARD DIAGNOSTICS/DATA RECORDERS: Onboard diagnostics and data recorders used to monitor and record parameters such as a driveshaft speed, acceleration, nitrous timing, chassis strain, suspension travel etc., permitted. Wide band oxygen sensors permitted. “Playback” tachometers permitted (i.e. Autometer Dual Channel Ultimate II tachometers, and the use of its features). Laptops permitted in vehicle.
9.7 BOTTLES
BOTTLES: All bottles must be securely mounted, stamped with a minimum DOT–1800lb. rating, and identified as nitrous oxide. Bottles located in driver’s compartment must be equipped with the correct relief valve per manufacturer recommendations and vented outside the driver’s compartment. Bottles are limited to one 10-lb. bottle. Small blocks and nitrous engines less than 530ci may use two (2) 10-lb bottles. The use of any agents other than nitrous oxide as a part of, or mixed with, this pressurized fuel system is strictly prohibited. (Push systems are prohibited.) Commercially available, thermostatically controlled, blanket type bottle heaters are acceptable. Any other method of heating bottles in vehicle is prohibited.
9.8 TOW VEHICLES
TOW VEHICLES: Vehicles may be towed in or to staging lanes. Vehicles may be towed from the return road.
10: DRIVER
10.4 CREDENTIALS
CREDENTIALS: See general regulations.
11: CLASS & SAFETY REQUIREMENTS
It is the participant’s responsibility to familiarize oneself with the class requirements as found in the 2008 NMCA rulebook and the safety requirements as found in the 2008 NHRA rulebook.
The participant agrees that the participant bears the ultimate responsibility at all times to ensure that participant complies with all applicable NHRA & NMCA rules. The participant agrees that participant is in the best position to know about the construction and operation of participant’s vehicle, equipment, and clothing, and whether there has been compliance with all applicable NHRA & NMCA rules.
12: STREET-LEGAL REQUIREMENTS
Headlights and tail lights for year & make of body used mandatory. Head lights & tail lights required to be functional.
13: RULES ADJUSTMENTS, MID SEASON LOG
DATE: ADJUSTMENT:
None at this time.
Last Updated: October 2, 2008
ARP - NOSTALGIA PRO STREET
NMCA SERIES 2008 RULES
General Overview
Nostalgia Pro Street vehicles are designed for American production passenger cars and trucks, 1950 & later, back half and tube chassis vehicles that emulate the famous “Pro Street” vehicles of the early 90’s that defined the Street movement. Nostalgia Pro Street vehicles are permitted small block and big block engines with nitrous oxide as the only permitted power adder on certain combinations. Nostalgia Pro Street racing will be conducted at all drag racing events (see race schedule).
Qualifying Information, Ladder Type, & Tree
All Run, NHRA Sportsman Ladder, Pro .400 tree, Heads-Up.
Weight Breaks
ENGINE INDUCTION WEIGHT MAX CUBIC INCH
Big Block Naturally Aspirated 2725 640
Big Block Nitrous Oxide 3100 480
Big Block Nitrous Oxide 3200 530
Big Block Nitrous Oxide 3200 640
Small Block Nitrous Oxide 2750 460
Small Block Nitrous Oxide 2850 525
Maximum Cubic Inch - 650
Any combo that shows to have an advantage at any NMCA event, that combo can be readjusted at any time.
Any vehicle that does not utilize the stock core support must add 25lbs.
Clutch-equipped transmissions must add 150 pounds to listed base weight. See section 2.12
OEM Style Cylinder Head (stock port layout, height, valve angle +/- 2 degrees) may deduct 100 lbs.
1950 – 1974 body styles and all Trucks–deduct 75 pounds from base weights.
Tube chassis vehicle (or back-half vehicles not meeting back-half requirements) must add 100 pounds to base weight. See section 1.16, 3.4.
Tube chassis vehicles permitted with tubular front clip & purpose built front suspension, required to add 100 lb to base weight.
Any “back half” vehicle that does not fit front suspension/chassis regulations must add 50 lbs. to base weight.
Fuel-injected entries must add 50 pounds to base weights. See section 1.20.
Big Block Nitrous entries equipped dual carburetor-equipped entries must add 50 lbs. See section 1.19.
All Small block engines with a canted valve head must add 100lbs.
*If actual cubic inch is more than base cubic inch listing, there will be a weight penalty of 7.0 pounds per cubic inch assessed to base weights, up to the maximum cubic inch permitted in the class.
Note: All weights are with driver & rounded down to the five pound increment. Ex: A calculated weight of 2842 would be required to weight 2840 with driver at scales.
Accepted Products:
Accepted Products Deadline: NMCA will accept requests from manufacturers to have new products considered for addition to 2008 accepted lists only up until November 10, 2008. After this date, NMCA will consider manufacturer requests for new products for the 2009 season.
1: ENGINE
1.1 COOLING SYSTEM
RADIATOR: OEM production-style or aftermarket radiator is required and must be mounted in front of engine.
Water pump: Any aftermarket (belt drive or electric drive) pump permitted.
COOLING FANS: Any permitted.
1.2 ENGINE
ENGINE: Engine must be a V-8 automotive type engine. Any internal modifications are permitted. Cross breeding of an engine to a different make of body permitted. Engine swapping permitted during event. Big block engines are limited to a maximum of 640 cubic inches and must use stock OEM block bore spacing and cylinder head bore spacing for OEM engine type. Small block engines are limited to a maximum of 525 cubic inches and must use stock OEM block bore spacing and cylinder head bore spacing for OEM engine type.
OEM engine type refers to the OEM type of engine a racer is using, not the manufacture of the block: such as big block Chevrolet, small block Chevrolet, big block Ford, big block Chrysler, etc. In addition if an original OEM engine type block was a 90 degree block, the block the racer uses must be a 90 degree block.
Water injection is prohibited.
1.3 EXHAUST
EXHAUST: All entries allowed to use tubular headers. Adapter plates permitted to bolt headers to cylinder head. Exhaust must be directed out of car body, away from driver and fuel tank.
1.3a) HEADERS & COLLECTORS: Any headers and/or collectors permitted.
1.3b) EXHAUST TUBING/SIZE: All exhaust gases released from engine must pass through muffler(s). Any exhaust tubing size permitted.
1.3c) TAILPIPE & EXHAUST RULES: Not required.
1.3d) MUFFLER REQUIREMENTS: Mufflers required. Commercially available, conventional style (generally available through retail locations) mufflers required. A maximum of two (2) mufflers is allowed. A maximum of one (1) inlet and one (1) outlet is permitted. Collector-style mufflers are permitted.
1.5 FUEL-DELIVERY SYSTEM
DELIVERY SYSTEM: Electric or mechanical fuel pumps permitted. Pressure regulators, and any line size permitted. All fuel lines must originate and return to a single, non-segmented, fuel cell or OEM fuel tank. Fuel pump must shut off with a master electrical switch. Any method of artificially heating or cooling fuel prohibited (cool cans, ice, wet rags, Freon, etc.). A valve for removal of fuel (gasoline) during technical inspections is mandatory. Valve must be installed between carburetor/injection and regulator, and should be installed in such a manner that allows a cup to be placed to catch fuel removed from the line. Exit of valve should be capped or plugged in addition to being closed for added safety.
Aftermarket/fabricated fuel tank or cell permitted. Must be located outside driver’s compartment and inside body lines. If tank or fuel filler is inside trunk, a bulkhead of minimum .032” aluminum or .024” steel must be used between trunk and driver compartment, and tank must be vented to outside of car. When used, fuel cells must have a metal box protecting the part of the fuel cell that is outside the trunk floor.
Non-metallic fuel cells or tanks must be grounded to frame. See NHRA General Regulations Section 1.5.
1.6 GASOLINE
GASOLINE: Gasoline as outlined here is the only acceptable fuel for use in this eliminator. The NMCA Racing Association reserves the right to check gasoline at any time during competition. Gasoline, as defined by the NHRA rulebook, is a mixture of hydrocarbons only. The average dielectric constant (D.C.) for the hydrocarbons that compromises gasoline is 2.025. This is defined as a reading of “0” on the fuel-check meter. NMCA allows no greater reading than a “0” on the fuel-check meter. Failure to pass fuel check is grounds for disallowance of the run during competition and disqualification from the event during eliminations.
NITROUS OXIDE
NITROUS OXIDE: Nitrous oxide entries are restricted to a single stage fogger or a single stage nitrous plate (or dual, single stage, nitrous plates for dual carb entries only). Nitrous line size is unrestricted. Nitrous jet limitations for big block nitrous engines over 530ci are as follows: Fogger: .030 maximum, Single plate: .096 maximum; Dual plates (two carbs only): .069 maximum. Big block nitrous engines under 530ci permitted to utilize a fogger system with a .046 maximum jet size. All small block nitrous combinations permitted to utilize a fogger system with a .044 maximum jet size. Push systems prohibited. The use of agents other than nitrous oxide as part of, or mixed in, the system are prohibited. Nitrous oxide may not be used in conjunction with any other power adder. If entry is entered as a non-nitrous entry, all solenoids, lines, fittings, and bottles must be removed prior to technical inspection and any competition runs.
SINGLE PLATE: The use of conventional style, single (one carb) or dual (two carbs), nitrous plates, bolt on style, with a maximum of 2 spray bars (1 nitrous - 1 fuel bar maximum) per plate. “X” bar or cross bar style nitrous systems prohibited. Progressive systems permitted. See SOLENOIDS 1.22 for restrictions to solenoids.
SINGLE FOGGER: The use of a conventional style, single stage, and nitrous fogger system permitted. Limited to one nitrous nozzle, and one nitrous orifice, per cylinder. Progressive systems permitted. See SOLENOIDS 1.22 for restrictions to solenoids.
PLENUM SYSTEM: The use of a plenum spray system is permitted with a maximum of 2 spray bars (1 nitrous - 1 fuel bar maximum). Progressive systems permitted. See SOLENOIDS 1.22 for restrictions to solenoids.
PURGE: Nitrous purge system permitted, purge must exit at the cowl area away from inlet area of the hood or hood scoop. Purge tube must exit via a straight tube a minimum length 4 inches protruding from the cowl, and may not be within 12 inches of the opening of the hood. Plume or nail head at end of line is prohibited.
1.9 OIL SYSTEM
OILING SYSTEM: Any oiling system permitted. Any vacuum pump and/or evacuator system (header, or otherwise) permitted. Any oil pan permitted.
1.10 SUPERCHARGER
SUPERCHARGER: Prohibited.
1.15 BLOCK
BLOCK: Big block and small block engines equipped with nitrous oxide are restricted to stock OEM bore spacing. Naturally aspirated big blocks permitted a maximum bore spacing of 4.900”. Any internal modifications permitted. Any commercially available cast iron or aluminum engine block is permitted which fits these specifications.
1.16 ENGINE LOCATION/MOUNTS
ENGINE LOCATION (ALL EXCEPT TUBE CHASSIS): Maximum allowable engine setback from the centerline of the number-one spark-plug hole to the centerline of the front spindle is 4 inches, except in those vehicles in which the engine was factory installed at a distance greater than 4 inches behind the spindle. In those cases, the engine setback may be no further back than the stock location. Engine plates and solid engine mounts permitted. Block and/or heads must not touch firewall or cowl area.
Engine Location (TUBE CHASSIS): maximum allowable engine setback is no more than 10% of the wheelbase as measured from centerline of front spindle to center of spark plug hole. Engine plates and solid engine mounts permitted. Block and/or heads must not touch firewall or cowl area.
1.17 HEADS
HEADS, GENERAL: Nostalgia Pro Street is intended for ported, high performance “street/strip and race” cast iron or aftermarket aluminum cylinder heads. Big block and small block cylinder heads are restricted to those originally designed as “stock bore spacing” cylinder heads that are originally produced with a intake valve angle no less than 11 degrees. Cylinder heads are restricted to a minimum valve angle of 11 degrees during competition. Small block engines must maintain standard OEM valve layout design (no substituting canted valve for inline head, etc.)
1.17a) HEADS, PERMITTED: Original manufacture, generally available heads, accepted by NMCA, permitted. Billet or fabricated heads prohibited. Cylinder heads must be overhead valve single spark plug per cylinder design. One-off or custom made cylinder heads prohibited. Internal port areas of cylinder heads may be welded or epoxied, but heads must maintain standard “as produced” valve layout design, valve cant, etc. (no fabricating a canted valve design from an inline head, etc.) All small block combos can run a canted valve head with weight adder.
1.17b) HEADS, MASS PRODUCED: Only mass produced, commercially available, NMCA accepted, commonly available, cast aluminum or cast iron cylinder head is permitted. Low volume, one off, aluminum cylinder heads prohibited.
1.17c) HEADS, BOLT PATTERN: Any permitted.
1.17d) VALVE JOB: Any valve job permitted.
1.17e) RUNNER/COMBUSTIONS CHAMBER COATINGS: Any permitted.
1.17f) HEADS, PORTING: Permitted.
1.17g) HEADS, WELDING/EPOXY: Permitted.
1.17h) HEADS, VALVES: Any OEM or aftermarket valve permitted. Bronze lined or replacement guides permitted.
1.17i) HEADS, MILLING: No regulations limiting milling. All cylinder heads are restricted to a minimum valve angle of 11 degrees during competition.
1.17j) HEADS, PUSHROD SLEEVES: Permitted. Cylinder head may be cut for larger push rods.
1.17k) HEADS, COMBUSTION CHAMBER VOLUME: No regulations limiting combustion chamber volume.
1.17l) HEADS, PORT PLATES/ADAPTER PLATES: Port plates/adapter plates permitted on intake & exhaust side of cylinder head.
1.18 VALVETRAIN
1.18a) CAMSHAFT: Any permitted.
1.18b) LIFTERS: Any permitted.
1.18c) LIFTER BORES: Lifter bores permitted to be bushed.
1.18d) VALVE LOCK: Any permitted.
1.18e) RETAINERS: Any permitted.
1.18f) ROCKER ARMS: Any permitted.
1.18g) CAMSHAFT DRIVE SYSTEM: Any permitted.
1.19 CARBURETORS
CARBURETORS: Single or dual carburetors accepted on all combinations. Split carburetors prohibited (example: a Dominator, split and offset into two two-barrels). Dual carburetor-equipped entries must add 50 lbs. Naturally aspirated and nitrous small block entries may utilize dual carbs without weight penalty. Any size carb(s) permitted. Aerosol Carburetors Prohibited.
1.20 FUEL INJECTION
Fuel Injection: Fuel injection permitted, must be electronic.
Fuel-injected entries must add weight to listed base weight. Single or dual throttle bodies (single throttle blade or single four-barrel style) accepted. Any four-barrel style throttle body must be arranged in a conventional manner (grouped together as a carburetor).
1.21 INTAKE MANIFOLD
INTAKE MANIFOLD: Mass produced, commercially available, cast aluminum, carburetor type intake manifolds with a common plenum required for nitrous combinations. Single carb style or single/dual carb tunnel ram style cast intake accepted. Sheet metal fabricated or carbon fiber manifold accepted for all combinations with no weight adder. Porting, minor welding or epoxy on interior of cast intake manifold permitted. No welding or epoxy permitted on exterior of intake manifold for any reason, with the sole exception of nitrous/fuel injector bungs.
1.22 SOLENOIDS
SOLENOIDS: Maximum of 4 solenoids (2 – nitrous, 2 – fuel). One inline “safety” solenoid permitted for progressive systems only.
1.23 TURBOCHARGERS
TURBOCHARGERS: Prohibited
1.24 AFTERCOOLER/INTERCOOLER
AFTERCOOLER/INTERCOOLER: Prohibited.
1.25 POWER ADDERS
POWER ADDERS: Any single power adder (nitrous oxide & supercharger) permitted with engine combination. See sections 1.9, 1.12, & 1.23.
1.26 CRANKSHAFT
CRANKSHAFT: Any crankshaft permitted. Multi-piece or composite crankshafts prohibited.
1.27 CONNECTING RODS
CONNECTING RODS: Steel, aluminum, or titanium connecting rods required. Composite connecting rods prohibited.
1.28 HEAD GASKETS & QUENCH AREA
HEAD GASKETS & QUENCH AREA: No restrictions.
1.29 PISTONS, PINS, RINGS
PISTONS, PINS, RINGS: Any piston, pin, ring combination permitted.
1.30 BOOST CONTROLLERS
BOOST CONTROLLERS: Prohibited.
1.31 WASTEGATE & PRESSURE REGULATOR
WASTEGATE & PRESSURE REGULATOR: Prohibited.
1.32 VISIBLE COATINGS
VISIBLE COATINGS: Visible coatings are permitted where lubricants are present. Visible piston coating above the top ring is permitted. Visible coating of cylinder head runners, combustions chambers, and/or intake manifold runners/plenums permitted.
1.33 “O” RINGING OF BLOCK
“O” RINGING OF BLOCK: Permitted.
2: DRIVETRAIN
2.3 CLUTCH
CLUTCH: Clutch operation must be manually applied and disengaged with foot during run, without the assist of electric, hydraulic or pneumatic devices. Multi stage, variable release, or lock up type of any description is prohibited. Throwout bearing must release all fingers or levers simultaneously. Clutch (2 disk maximum) meeting SFI spec 1.1 or 1.2 mandatory.
2.4 DRIVESHAFT
DRIVESHAFT: Any permitted.
2.11 REAREND
REAREND: Any automotive type rearend permitted.
2.12 MANUAL TRANSMISSIONS
MANUAL TRANSMISSION: OEM or aftermarket transmissions with a maximum of 5 forward speeds permitted, including “clutchless” models. Any gear change must occur from direct action by the driver. Pneumatic, electric, hydraulic, etc. shifters prohibited. Torque converters not permitted with this type of transmission.
2.13 PURPOSE BUILT TRANSMISSIONS
PURPOSE BUILT TRANSMISSIONS: Any purpose built transmission with a maximum of 5 forward speeds utilizing a clutch permitted. Any purpose built transmission with 3 speeds or less utilizing a torque converter must add weight to listed base weight (see section 13). Any gear change must occur as a result of an internal function of the transmission or from direct action by the driver. Pneumatic, electric, hydraulic, etc. shifters prohibited. Clutch not permitted with this type of transmission.
2.14 AUTOMATIC TRANSMISSIONS
(OEM American transmissions or replicas of OEM American transmissions that use planetary gears)
AUTOMATIC TRANSMISSIONS: Any OEM American automatic transmission or a replica of an OEM American automatic transmission that uses planetary gears and torque converter permitted, three forward speeds maximum. Transmission-to-engine adapters are permitted. Lock-up transmissions/torque converters permitted. Trans brakes permitted. Automatic transmission entries run at listed base weights. Pneumatic, electric, hydraulic, etc. shifters prohibited. Any gear change must occur as a result of an internal function of the transmission or from direct action by the driver. Clutch not permitted with this type of transmission.
3: BRAKES & SUSPENSION
3.1 BRAKES
BRAKES: All cars must have front and rear hydraulic brakes. Automated brakes or any type of traction control is prohibited. Application and release of brakes must be a function of the driver’s foot. Line lock permitted on front wheels only. Any other electric, pneumatic, or hydraulic device in the system is prohibited.
3.2 SHOCK ABSORBERS
SHOCK ABSORBERS: each vehicle in competition must be equipped with one operative shock absorber for each sprung wheel. Shock absorbers may be either hydraulic or friction type, securely mounted and in good working order.
3.3 STEERING
STEERING: Any type steering permitted.
3.4 SUSPENSION, general
SUSPENSION, GENERAL: This eliminator is designed for “back half vehicles” with stock front frame rails, and stock type front suspension, and for “tube chassis vehicles”. A “back half vehicle” is defined as a vehicle which 1) maintains the stock front frame rails, stock radiator/core support area, and utilizes stock or stock type, direct replacement style front suspension and 2) maintains the stock firewall in the stock location. Rear suspensions are permitted to be stock, ladder bars, or 4-links. Coil over shocks are permitted. Tube chassis vehicles permitted with tubular front clip & purpose built front suspension, required to add 100 lb to base weight. Any “back half” vehicles that do not fit front suspension/chassis regulations must add weight to listed base weight.
NO FRONT WHEEL DRIVE CONVERSIONS PERMITTED IN THIS ELIMINATOR.
3.4 SUSPENSION, FRONT – BACKHALF TYPE CHASSIS
FRONT SUSPENSION:
3.4a) K-MEMBERS: Aftermarket K-Members permitted. K-member may be modified in oil pan area to allow oil pan enlargement or removal.
3.4b) STRUT TOWER/UPPER SHOCK MOUNTING POINTS: Factory OEM strut tower required. For 1978 and older vehicle model years, only OEM strut tower/shock tower may be removed in lieu of installing/using commercially available suspension kit (i.e., Heidt, Fatman, etc). Other sections of front suspension rules must be adhered to.
3.4c) CONTROL ARMS: OEM or tubular stock type control arms required which are attached in stock location.
3.4d) SHOCKS/STRUTS: Aftermarket struts and shocks permitted provided stock attachment location used.
3.4e) SPRINGS: Aftermarket springs permitted.
3.4f) COIL OVERS: Coil over shocks and struts permitted. Stock OEM mounting location required.
3.4g) CAMBER PLATES: Bolt on type camber plates permitted.
3.4h) SPINDLES: Accepted, bolt-on, commercially available aftermarket spindles permitted.
Back half vehicles that do not fit front suspension/chassis regulations may compete as tube chassis vehicle.
SUSPENSION, FRONT – TUBE CHASSIS
FRONT SUSPENSION: Purpose built front suspensions & tubular front clips accepted for competition, must add 100 lbs. to base weight.
3.4 SUSPENSION, REAR
REAR SUSPENSION: Stock and aftermarket type suspension, including leaf springs, stock 3 or 4 link, ladder bars, and aftermarket racing style 4-link suspension permitted. Rear coil-over shocks permitted.
3.4a) STOCK TYPE SUSPENSION: Stock type suspension may utilize aftermarket, direct replacement type suspension components including aftermarket replacement shocks, springs, leaf springs (may be moved inboard), and/or control arms. Aftermarket torque arms permitted. Aftermarket leaf spring kits permitted.
3.4b) 4-LINKS: Racing style 4 link suspensions using fabricated front cross member support permitted. Track locators permitted.
3.4c) LADDER BARS: Welded on ladder bars using fabricated front cross member support permitted. Ladder bars permitted.
3.4d) REPLACEMENT CONTROL ARMS & LEAF SPRINGS: Replacement upper and lower control arms and leaf springs permitted. Control arms may use any type bushing, bearing, or rod end. Control arms may be adjustable to any length.
3.4e) PANHARD BARS: Permitted. Panhard bars must be located aft of rearend housing. Panhard bars may be welded.
3.4f) SWAY BARS: Aftermarket or factory sway bars permitted. Aftermarket sway bars may be welded to both chassis and rearend housing.
3.4g) TORQUE ARMS: Permitted.
3.4h) REAR SHOCKS & SPRINGS: Any permitted, including coil over shocks and springs.
3.6 WHEELIE BARS
WHEELIE BARS: All wheelie bars must have a non-metallic wheel. Wheels must turn freely at starting line. Wheel preload is prohibited. Using the wheelie bar as a “fifth wheel” sensing device is prohibited. Wheelie bars must be fixed. Hydraulic, pneumatic, electronic, etc. or any other adjustment or movement during run is prohibited.
4:FRAME
4.4 FRAME
FRAME: Stock, unaltered front frame rails required for back half vehicle. For back half vehicles, frame rails may be replaced rearward of the firewall. For tube chassis type vehicles, purpose built frame rails permitted for entire length of vehicle. If the stock rear frame is notched, it must be reinforced in a manner acceptable to NHRA. Subframes on unibodied cars may be joined under car. Maximum size material to be used; 2” x 3” x 0.125” rectangular tubing or 1 5/8 O.D. inch round tubing (.118MS or .083CM). If connector protrudes through floor, floor must be completely welded to connector. Rear subframe may be moderately moved in or “C’d” for tire clearance. Rear subframes may be constructed of 2” x 3” rectangular material with 0.083” wall thickness or 1.625” O.D. x .083” inch wall chromemoly (.118” wall mild steel) round tubing.
4.5 GROUND CLEARANCE
GROUND CLEARANCE: Minimum 3 inches from front of vehicle to 12 inches behind centerline of front axle; 2 inches for remainder of vehicle, except oil pan and exhaust headers.
4.12 WHEELBASE
WHEELBASE: Entries must retain stock wheelbase within + or - 1 inches of stock. Maximum variation from left to right and front to back of 1 inch.
5: TIRES AND WHEELS
5.1TIRES
TIRES–FRONT: Front tires must have a minimum tread width of 4.5 inches.
TIRES–REAR: Street type or racing slicks permitted. Maximum rear tire sidewall designation allowed in competition for racing slicks is 35.0/17-16. DOT tires may also be used with a maximum rear sidewall designation of 35/22.5-16. Tire tread may not extend outside fenders.
5.2 WHEELS
WHEELS: Spindle-mount front wheels permitted.
6: INTERIOR
6.1 INTERIOR
Interior: Must maintain stock appearance; including factory OEM style dashboard. Heater/air conditioners may be removed. Master cylinder may be relocated to accommodate brake pedals & linkage.
6.4 CARPET
CARPET: Floor and tunnel where visible must be upholstered or carpeted. Aftermarket wheel tubs do not require carpeting. Headliner required.
6.5 SEATS
SEATS: Upholstered OEM or aftermarket upholstered seats (2) required. Seat location may be altered, but seatback not permitted behind the plane of the rear doorjamb. For tube chassis vehicles only, seat location may be altered, but seatback not permitted to be greater than 4-inches behind the plane of the rear doorjamb. Rear seat may be removed when roll bar/roll cage is installed; area must be carpeted or upholstered.
6.6 DOOR PANELS
DOOR PANELS: Stock OEM or replacement type door panels required.
6.7 STEERING COLUMN
STEERING COLUMN: Aftermarket steering column permitted. Removable steering wheel permitted.
6.8 GAUGES
GAUGES: Aftermarket gauges may be installed in factory or OEM
style dash.
6.9 PEDALS
PEDALS/PEDAL LOCATION: Aftermarket pedals and linkage are permitted, but must remain in stock location in foot well.
7: BODY
BODY GENERAL: Nostalgia Pro Street is restricted to 1950 & newer American made rear wheel drive vehicles. Body dimensions and shape must be exact OEM stock, vehicle must retain original appearances and profiles for year and make of body. Panel cars prohibited. For the purpose of this eliminator, legal vehicles will be restricted to those that where factory line assembled, and must retain factory door jams, rockers, complete door mounting area (including the area beneath the A-pillar, which may be altered to facilitate lift off doors). Steel (or original OEM fiberglass) material required for quarter panels and roof. Aluminum or fiberglass material permitted for front fenders, hood, doors, deck-lid, and bumpers. Hood and/or trunk lid must be hinged or lift off. Hood, doors, and trunk lid must be attached separately and must be operable. One piece front ends (fenders and front valance/bumper) are permitted. Alterations or aerodynamic modifications such as “chopped tops”, “channeling”, “sectioning”, “shortening” or “scaling down” prohibited. Flaring or spreading of external fender lines prohibited. Body must be finished and painted.
If a convertible top is used as an entry, the use of ANY mechanism under or above the convertible top is not permitted.
Ex: Building a cover that would be located above or below the convertible top, using straps below or above the convertible top, etc.
Convertible tops need to be operational in all classes that the windows are required to operate.
All entries with convertible tops must compete with top up.
7.1 ADVERTISING
GRAPHICS: Sponsorship graphics, logos, lettering, and/or decals (for advertising or creative purposes) restricted to rear quarter panels, windows, Rocker panels, front fenders and hoodscoop only. No letters, decals, or sponsorship graphics to appear on doors, roof, hood, bumpers, or rear trunk lid.
CONTINGENCY DECALS: In order to be eligible for NMCA official contingency program, all contingency decals (or decals that are not contingency paying) are required to appear on the rear quarter windows or rear window only.
NMCA REQUIRED DECALS: The following decals are required for competition in NMCA events.
NMCA Windshield Decal – must be installed on top of windshield. This NMCA decal must be the only decal on top of windshield. Other vehicle sponsor decals may be placed at base of windshield.
NMCA 2008 Drag Racing Series “Side” Decals – must be installed on each side of vehicle on quarter windows.
Class Sponsor Decal – class sponsor decal must be installed on base of windshield on the passenger side.
Permanent Numbers – permanent numbers are required for competition in this class.
7.2 SPOILERS
REAR SPOILER: Rear spoilers permitted, may not extend more than 26 inches from the transition point with the body to the rear most portions. Rear spoiler may not be molded into body (Pro Mod Style).
Spoilers must be stationary during entire run. A positive locking device to prevent movement required. Spring loaded spoilers prohibited. Spoiler spill plates (if used) may be a maximum of 12” in height.
7.5 FIREWALLS
FIREWALL: Stock firewall in stock location required if back half vehicles, but notching and minor modifications permitted to stock firewall for engine clearance, exhaust, etc. Fabricated firewall permitted for tube chassis vehicle. For Chevrolet Corvette, only if OEM equipped with stock fiberglass firewall; firewall may be replaced with a flat steel firewall, no thinner than .024, located in the OEM stock location. Replacement steel firewall must be one piece, fully attached along perimeter, and permanent in nature.
7.6 FLOOR/TRUNK PAN
FLOOR: Floor/ trunk pan/transmission tunnel modifications are permitted. Replacing stock floor/trunk pan/transmission tunnel with a minimum of.024 inch thick steel or .032 inch thick aluminum permitted. Magnesium is prohibited.
7.7 HOOD/SCOOP
HOOD\SCOOP: OEM, or fiberglass hood and /or scoop permitted. Forward-opening or rear-opening scoops permitted. One opening only permitted. Induction must be completely covered by hood, bubble, or scoop. Hood must be separate and not be part of front fenders. Scoop need not be part of the vehicle hood.
7.9 WINDSHIELDS/WINDOWS
WINDOWS: OEM safety glass or NHRA-accepted safety glass, or 0.125” thick polycarbonate material, such as Lexan MR 4000 mandatory. Driver and passenger windows must be closed during racing. Bracing and/or rivets must not be visible from outside of vehicle. Window tint is prohibited forward of the “B” pillar.
7.10 BUMPERS
BUMPERS: Front and rear bumpers must be OEM or be duplicates of originals and may be made of steel or fiberglass. License plate frame holders are not permitted to extend beyond flat surface of front bumper. No body components, bumper add-ons, or body kits are permitted to be added to the vehicle with the intent of increasing the frontal distance of the bumper for the purposes of breaking the infrared beams.
7.11 FENDER SPLASH PANS
FENDER SPLASH PANS: Full, factory OEM or aftermarket inner fenders required. May be trimmed for header clearance.
7.12 GRILLE
GRILLE: Full factory stock grille required. Blocking of grille to prevent air passage is prohibited. Grill may not be fake, painted or airbrushed.
7.13 WHEELWELLS
INNER WHEELWELLS: Aftermarket wheeltubs permitted. Material used to add to the width of the inner wheelwell may be steel, aluminum, fiberglass, or carbon fiber.
OUTER FENDERS: Leading and trailing edges of fenders may be trimmed for tire clearance.
7.14 RAM AIR/ENGINE AIR PANS
RAM AIR: Any ram-air unit permitted. Headlights/taillights/hazard lights may not be removed/modified for air induction.
7.15 DOORS
DOORS: Driver and passenger doors must be functional and operable from inside and outside of vehicle. OEM, aluminum, or fiberglass replicas permitted.
7.16 AERODYNAMICS
AERODYNAMICS: Taping of any body parts, seams, or front end prohibited. Removal of side mirrors permitted.
7.17 BODY KITS
BODY KITS: Accepted, commercially available body kits permitted. Filling in the lower valance permitted. (taping not permitted).
7.18 COWL AREA
COWL AREA: Complete OEM cowl required for non-tube chassis vehicle. Cowl area may be notched if tube chassis weight break is used.
7.19 FRONT FENDERS/FRONT FASCIA
FRONT FENDERS/FRONT FASCIA: O.E.M. or aftermarket stock appearing front fenders made of steel, aluminum, or fiberglass permitted. Stock appearing front fascia required. May be one-piece.
8: ELECTRICAL
8.1 BATTERY
BATTERY: Battery may be relocated. Alternator not required.
8.3 IGNITION
IGNITION: Any battery operated ignition permitted. Any distributor drive system permitted.
8.5 STARTER
STARTER: All entries must be self-starting with on-board starter.
9: SUPPORT GROUPS
Bracket racing aids such as optical sensors, delay boxes, stutter boxes, etc. prohibited. Throttle stops prohibited. The application or use of any device, mechanical or electronic that permits the driver to ascertain the position of their vehicle in relation to the starting line is prohibited.
9.2 ONBOARD DIAGNOSTICS\DATA RECORDERSONBOARD DIAGNOSTICS/DATA RECORDERS: Onboard diagnostics and data recorders used to monitor and record parameters such as a driveshaft speed, acceleration, nitrous timing, chassis strain, suspension travel etc., permitted. Wide band oxygen sensors permitted. “Playback” tachometers permitted (i.e. Autometer Dual Channel Ultimate II tachometers, and the use of its features). Laptops permitted in vehicle.
9.7 BOTTLES
BOTTLES: All bottles must be securely mounted, stamped with a minimum DOT–1800lb. rating, and identified as nitrous oxide. Bottles located in driver’s compartment must be equipped with the correct relief valve per manufacturer recommendations and vented outside the driver’s compartment. Bottles are limited to one 10-lb. bottle. Small blocks and nitrous engines less than 530ci may use two (2) 10-lb bottles. The use of any agents other than nitrous oxide as a part of, or mixed with, this pressurized fuel system is strictly prohibited. (Push systems are prohibited.) Commercially available, thermostatically controlled, blanket type bottle heaters are acceptable. Any other method of heating bottles in vehicle is prohibited.
9.8 TOW VEHICLES
TOW VEHICLES: Vehicles may be towed in or to staging lanes. Vehicles may be towed from the return road.
10: DRIVER
10.4 CREDENTIALS
CREDENTIALS: See general regulations.
11: CLASS & SAFETY REQUIREMENTS
It is the participant’s responsibility to familiarize oneself with the class requirements as found in the 2008 NMCA rulebook and the safety requirements as found in the 2008 NHRA rulebook.
The participant agrees that the participant bears the ultimate responsibility at all times to ensure that participant complies with all applicable NHRA & NMCA rules. The participant agrees that participant is in the best position to know about the construction and operation of participant’s vehicle, equipment, and clothing, and whether there has been compliance with all applicable NHRA & NMCA rules.
12: STREET-LEGAL REQUIREMENTS
Headlights and tail lights for year & make of body used mandatory. Head lights & tail lights required to be functional.
13: RULES ADJUSTMENTS, MID SEASON LOG
DATE: ADJUSTMENT:
None at this time.
Last Updated: October 2, 2008