CAR CRAFT - STREET RACE
NMCA SERIES 2008 RULES

General Overview
Car Craft Street Race is the ultimate “real world” class in the NMCA-Edelbrock series. Car Craft Street Race is a class designed for real street cars and trucks equipped with DOT-legal street slicks or drag radial tires. Car Craft Street Race entries are permitted EFI or carbureted nitrous-equipped, supercharged, or turbocharged small block up to 415 ci, or carbureted big block engines up to 490 ci. Car Craft Street Race permits a variety of race-proven modifications and performance enhancements on stock bodied, stock appearing vehicles. Car Craft’s Street Race class is for 1950 and later American production cars and trucks. Car Craft Street Race will be conducted at all drag racing events (see race schedule). Each event, the winner of the Car Craft Street Race will be required to carry 20 additional pounds for the next NMCA event, and the runner-up will be required to carry an additional 10 pounds. This weight adder will be cumulative through the racing season, adding up each event. At the conclusion of the season, all racer weights will be reset to zero.

Base Weight Breaks*
ENGINE         BASE CI        POWER ADDER       WEIGHT
Small Block     400                  Naturally Aspirated    2900
Small Block     310                  Nitrous                        2900
Small Block     360                  Nitrous                        3100
Small Block     400                  Nitrous                        3300
Small Block     310                  Supercharged              3300
Small Block     360                  Supercharged              3400
Small Block     360                  Turbocharged              3400
Big Block        475                  Nitrous                        3450
Big Block        475                  Naturally Aspirated    3150

Weight Adders/Deducts:
Maximum cubic inches for all small block combinations is 415 CI.
Maximum cubic inches for all big block combinations is 490 CI.
Aftermarket EFI systems (DFI, FAST, etc.) must add 50 pounds to base weight
1950 – 1974 body styles and all Trucks – deduct 50 pounds from base weights.
Select street superchargers may deduct 100 pounds. (see section 1.12)
Forced induction engines with intercoolers or aftercoolers must add 100 pounds.
Permitted D.O.T. drag radial - deduct 125 pounds.

*If actual cubic inch is more than base cubic inch listing, there will be a weight penalty of 10 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 2968 would be required to weight 2965 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.

Qualifying Information, Ladder Type, & Tree
All Run, NHRA Sportsman Ladder, Pro .400 tree, Heads-Up.

1: ENGINE
1.1 COOLING SYSTEM
RADIATOR: OEM production-style or aftermarket radiator is required and must be mounted in stock location. Stock core support is required.
Water pump: Electric water-pumps and drives permitted.
COOLING FANS: Any permitted.
1.2 ENGINE
ENGINE: Engine must be a V-8 small block or big block automotive type domestic-brand engine. Pushrod engines are restricted to 2-valves per cylinder, overhead valve design. Overhead cam engines are restricted to Ford 4.6L modular engines only, either 2-valve or 4-valve. Cross breeding of an engine to a different make of body permitted. Engine swapping permitted during event. Water injection is prohibited.
1.3 EXHAUST
EXHAUST: Adapter plates permitted to bolt headers to cylinder head. Exhaust must be directed out of car body, away from driver and fuel tank. All exhaust gases released from engine must pass through muffler(s).
1.3a) HEADERS & COLLECTORS: All entries allowed to use tubular headers.
1.3b) EXHAUST TUBING/SIZE: A maximum of dual 3-inch exhaust is permitted for naturally aspirated, nitrous and supercharged racers. Turbocharged engines may use a single 4-inch maximum exhaust from the turbo housing, but it must split to dual 3-inch prior to the driver’s seat area.
1.3c) TAILPIPE & EXHAUST RULES: Exhaust system required within 12-inches forward of the centerline of the rearend housing.
1.3d) MUFFLER REQUIREMENTS: 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 prohibited. 3.000-inch mufflers (inlet/outlet) are required.
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 in trunk area. 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 for the specified combinations (See Section 13). The NMCA-Edelbrock 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.
SPEC FUEL: This class requires the use of one of the allowable spec fuels in this class. Mixing of fuels prohibited. 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 nitrous systems. Carbureted systems are required to use single stage single nitrous plate. EFI systems are required to use a single nitrous nozzle which injects nitrous oxide into the engine prior to the throttle blade. Nitrous oxide entries restricted to a single 10 lb. Nitrous bottle. Maximum nitrous jet size is .098-inch for small block engines, and 070-inch for big block engines. Nitrous jet must as-supplied and non-modified. Nitrous jet internal diameter must be a concentric circle. 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. Nitrous oxide systems must use gasoline only for the fuel enrichment circuit.
CARB: The use of a single stage, bolt on, conventional design & style nitrous plate, with a maximum of 2 spray bars per plate (one nitrous spray bar, one fuel spray bar), is required. “X” bar or cross bar style nitrous systems prohibited. Progressive systems permitted. Nitrous plate is restricted to a height of 1.20”-inch (including carb spacers & gaskets). See SOLENOIDS 1.22 for restrictions.
EFI: Fuel injection engines are required to use single nitrous nozzle mounted prior to the throttle body. There are two accepted options for fuel delivery for enrichment: (1) Dry-system where fuel is enriched through existing OEM-location fuel injectors (2) Wet-system where fuel in added prior to throttle blade.
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 in prohibited.
1.9 OIL SYSTEM
OILING SYSTEM: Wet sump oiling system required. External oil pumps prohibited. Oil lines run outside engine block to feed oil galleries prohibited. Vacuum pump and/or evacuator system (header, or otherwise) prohibited. Any oil pan permitted.
1.10 SUPERCHARGER – Small Block Only
Permitted superchargers are restricted to accepted commercially available, standard, mass produced systems, utilizing the factory style belt drive system. Internals of supercharger units may not be modified from standard, mass-produced units. Injection of any liquid, gas, or any other substance into the supercharger prohibited. All supercharger systems must utilize stock, as provided supercharger head unit.
Intercoolers and aftercoolers are permitted with a 100-lb weight adder for supercharged applications.
1.10a) PULLEYS/BELTS: Standard-width 6-rib, 8-rib, and 10-rib serpentine belt systems are permitted. Cog belt systems are permitted.
1.10b) ROTATION
All pushrod engines must use standard rotation (non-reverse) supercharger, with supercharger inlet mounted rearward facing. Ford Modular, LT1, & LS1-based engines (block & cylinder heads) may use reverse supercharger with forward-facing inlet only (however, supercharger air inlet may not source air from hole in bumper and/or front valance).
The following part numbers are the only permitted supercharger systems & exact units permitted:
Vortech V1 A*-, B*-, S*-trim, V2 SQ S-Trim*, T-trim        
ProCharger P600B*, P1SC*, P1-SC-1*, P1-SC2*, D1, D1SC
Paxton SN*, VR4*, NOVI 1000*, 1200*
Powerdyne* and/or SVO/FRPP* Street System
Eaton M112 Supercharger*
Kenne Bell 2.2L* & 2.4L Supercharger
WhippleCharger 2.3L 2300*
* These street-type superchargers may deduct 100-lbs from base weight.
1.15 BLOCK
BLOCK: Engine block is restricted to an accepted type, cast iron small block or big block with OEM design & factory bore spacing. OEM aluminum blocks are accepted for use only if exact vehicle (year and model) came OEM-equipped with aluminum block. LSX block bolt pattern permitted for LS based engines and World Products ManO’War bolt pattern permitted for small block ford applications.
1.16 ENGINE LOCATION/MOUNTS
ENGINE LOCATION\MOUNTS: Engine may be relocated, but block and/or heads must not touch stock firewall or cowl area. Engine plates prohibited, solid engine mounts permitted.
1.17 HEADS
HEADS, GENERAL: Car Craft Street Race is intended for street and high performance cast iron or aftermarket aluminum cylinder heads.
1.17a) HEADS, PERMITTED: Original manufacture, generally available heads, accepted by NMCA, permitted. External modifications prohibited in port area. Spark plug placement and depth must remain stock. Billet or fabricated heads prohibited. Pushrod engines must use cylinder heads with standard two-valve, single spark plug per cylinder, overhead valve design. Only Ford Modular engines are permitted 2-valve or 4-valve overhead cam design. One-off or custom made cylinder heads prohibited. The NMCA director must approve new cylinder heads or any changes to accepted heads in writing prior to competition.
1.17b) HEADS, MASS PRODUCED: Any mass produced, commercially available, accepted, commonly available, cast aluminum or cast iron cylinder head is permitted. Low volume, one off, aluminum cylinder heads prohibited. Cylinder heads must be available to the public (generally available for the average consumer, with listed parts numbers, and sold by dealers).
1.17c) HEADS, BOLT PATTERN: Car Craft Street Race class is only permitted OEM standard bolt pattern for cylinder head and intake manifold. Adapter plates may be utilized on exhaust side, and may utilize aftermarket bolt pattern.
1.17d) HEADS, PORTING: Permitted on intake, combustion chamber, & exhaust port areas only. Welding, epoxy, etc. is strictly prohibited. Small block intake port runner may not measure larger than 221.0 cc, as installed on vehicle (whether ported or as-cast). Having an small-block intake port runner larger than 221.0 cc will result in disqualification. Big block (except Chrysler) intake port runner may not measure larger than 306.0 cc, as installed on vehicle (whether ported or as-cast). Chrysler Big block intake port runner may not measure larger than 276.0 cc, as installed on vehicle (whether ported or as-cast).
1.17e) HEADS, WELDING/EPOXY: Use of weld, epoxy, and/or other materials of this type and purpose, are strictly prohibited. In case of a needed repair to an isolated area of the cylinder head, contact NMCA tech director to determine legality.
1.17f) HEADS, VALVES: Any aftermarket steel valve permitted. Bronze lined or replacement guides permitted. Valve guide location must remain stock.
1.17g) HEADS, MILLING: Angle milling is acceptable. However, approved cylinder heads must maintain (and keep as measured) the original-production engine cylinder head valve angles +/- 3 degrees. All cylinder heads must measure +/- 3.0 degree of stock original-production engine cylinder head angle. For example, all Small Block Chevrolet cylinder heads, regardless of valve angle from manufacturer, must measure a minimum of 20.0 degree, to a maximum of 26.0 degree valve angle; all Small Block Ford cylinder heads must measure a minimum of 17.0 degree valve angle, to a maximum of 23.0 degree.; etc. The only accepted exceptions to this section are: Small Block Ford, TFS Twisted Wedge, Standard & ‘R’ Version, Small Block Ford.
1.17h) HEADS, PUSHROD SLEEVES: Prohibited.
1.17i) HEADS, COMBUSTION CHAMBER VOLUME: Any size chamber is acceptable.
1.17j) HEADS, PORT PLATES/ADAPTER PLATES: Port plates/adapter plates prohibited on intake side of head. Adapter permitted on exhaust side of head.
1.17k) VALVE JOB: Any valve job permitted.
1.17l) ALLOWED CYLINDER HEAD LIST: The following cylinder heads are the only accepted versions for the Street class.

Small Block Ford – Standard Intake Runner & Exhaust Port Versions Only
• Ford OEM 4.6L 2-valve, 3-valve, & 4-valve, 5.0, 5.8 Cast Iron and Aluminum Heads
• FRPP GT-40/GT-40P/GT-40X, GT-40Y Cast Iron and Aluminum Heads
• FRPP “Z” Cylinder Head PN# M-6049-Z304
• Edelbrock Performer & Performer RPM
• Edelbrock Victor Jr. (20-Degree Versions Only)
• Trick Flow Twisted Wedge & Track Heat, (Non-R)
• Brodix ST 5.0 Aluminum, PN# ST 5.0, ST 5.0R
• Brodix TI & T1X
• Holley 5.0, PN# 300-573, 574, 575, 576, 577, 578, 579
• World Products Roush 180 & Windsor Jr., PN# 53030, 23030
• World Products Roush 200 & Windsor Sr., PN# 53040
• Dart Pro 1 170cc & 195cc as-cast; 215cc CNC
• Air Flow Research 165, 185, 205
• Canfield 20 Degree 197 cc, PN# 20-450, 20-475
• RHS 180cc & 200cc Iron & Aluminum

Small Block Chevrolet – Standard Intake Runner & Exhaust Port Versions Only
• GM & Chevrolet Factory Small Block Heads, including LS1, LT4, etc.
• Edelbrock Performer, LS1/Lingenfelter CNC, Performer RPM, E-Tec 170cc & 200cc
• Edelbrock Victor Jr., 23 Degree, Standard Runner & Exhaust Port Only
• Air Flow Research LS1 205cc, 180, 190, 195, 210, 220 – Standard Runner & Exhaust Port Only
• Brodix RR 180, RR200, -8 & -10 Standard, – Standard Runner &  Exhaust Port Only
• Dart Iron Eagle 165cc through 215cc – Standard Runner & Exhaust Port Only
• Dart Pro 1 200 through 215cc - Standard Runner & Exhaust Port Only
• Canfield 23-500 – 23 Degree, 23-600 (220cc) - Standard Runner & Exhaust Port Only
• Trick Flow – 215cc R-Series & Duttweiller 23-degree - Standard Runner & Exhaust Port
• Trick Flow – GEN X 215 LS1\LS2
• World Products S/R Torquer, Sportsman II 200 cc
• World Products Motown 205 cc, 220 cc - Standard Runner & Exhaust Port

Chrysler Small Block – Standard Intake Runner & Exhaust Port Versions Only
• Stock factory OEM iron or OEM aluminum 318/340/360 Cylinder Heads
• Edelbrock Performer RPM & RPM 340
• Brodix B1-BA (not MC)
• Mopar Performance W2
• Indy 360-2 Oval Port Only (not 360-1 Rectangular Port)

AMC Small Block
• Edelbrock Performance RPM
• AMC Factory OEM Iron & OEM Aluminum

Big Block Chevrolet – Oval Port Only
• GM Stock Factory Oval Port
• Edelbrock 454 Oval Port #60459
• AFR 265 & 290cc Oval Port
• Brodix BB-1O, BB-1, RR294-Oval

Big Block Ford
• Stock Factory OEM 460 big block
• Edelbrock Performer 460 RPM #60669, 60679
• FRPP Cobra Jet & Super Cobra Jet

Big Block Oldsmobile
• Stock Factory OEM big block
• Edelbrock Performer RPM Olds

Big Block Pontiac
• Stock Factory OEM big block
• Edelbrock Pontiac Performer & RPM

Big Block Chrysler – 276.00 cc Maximum
• Stock Factory OEM big block
• Edelbrock Performer RPM 440
• Indy 440-SR, 440-EZ only (not EZ-1)
• Brodix B1-BS
• Mopar Stage 5, Stage 6

Note: Stock factory OEM heads are those cylinder heads that are factory production line installed on production vehicles as recognized by NHRA.

1.18 VALVETRAIN
1.18a) CAMSHAFT: Solid or hydraulic flat tappet camshaft, or hydraulic roller camshaft, permitted. Maximum lift at valve with zero lash is .550-inch for small block. Maximum lift at valve with zero lash is .600-inch for big block. No valve lash is permitted on hydraulic applications.
1.18b) LIFTERS: Stock type flat tappet, or hydraulic roller, lifters required. Mushroom tappets prohibited. Stock OEM diameter lifters required. Modifying of hydraulic lifters is prohibited. No valve lash is permitted on hydraulic applications.
1.18c) LIFTER BORES: Lifter bores permitted to be bushed.
1.18d) VALVE LOCK: Any valve locks permitted.
1.18e) RETAINERS: Any retainers required.
1.18f) ROCKER ARMS: Any rocker arms permitted.
1.18g) CAMSHAFT DRIVE SYSTEM: Stock OEM type camshaft drive system required. Belt drives are prohibited.
1.18h) REV KITS: Prohibited.
1.19 CARBURETORS
CARBURETORS: Any standard design type carburetor, up to, and including 850-cfm permitted. Standard performance carburetor modifications permitted, including removal of air horn, internal and external modifications. Maximum venturi size allowed is 1.5625-inch. Maximum throttle bore size is 1.750-inch. Standard-style boosters, or conventional-type factory-style annual boosters, are required. Supercharged & turbocharged entries may use blow-thru carburetor. Aerosol Carburetors Prohibited.
1.19a) AIR FILTER: Commercially available, mass produced, unmodified, automotive type air cleaner required. All incoming air must pass through air cleaner.
1.20 FUEL INJECTION
FUEL INJECTION: OEM engine control computer system required and must be functional to compete at base weight. Accepted, commercially available “plug-in” chips and stock-type “add on” systems accepted. Aftermarket EFI systems such as DFI, FAST, etc., are permitted with a 50-lb weight adder. Laptops of any type are prohibited in vehicle during competition.
1.20a) THROTTLE BODY: Only mass produced, commercially available throttle bodies permitted. Single throttle body in stock location required. Maximum throttle body size is 80-mm.
1.20b) MASS AIR SIZE & TYPE PERMITTED: Not required.
1.20c) FUEL INJECTOR SIZES & TYPES: Any size/type fuel injector permitted. Maximum of 8 fuel injectors located in stock location.
1.20d) AIR CLEANER: Commercially available, mass produced, unmodified, automotive type air cleaner required. All incoming air must pass through air cleaner.
1.21 INTAKE MANIFOLD
Lower intake manifold must be cast aluminum, commercially available and mass-produced. The only exception to above are vehicles whose intake manifold is OEM composite (example: GM LS1, Ford 4.6L 2V); those vehicles may use aftermarket, commercially available, mass-produced composite replacement (i.e. FAST LSX). Basic porting or port-matching permitted. Welding or epoxy on any part of inside, outside, or plenum of intake prohibited. Severe intake modifications are prohibited.
CARBURETED: Cast aluminum, single carburetor type intake manifolds with a common plenum required for all carbureted combinations only. Carburetor spacers limited to a maximum thickness of 1.200-inch (including nitrous plate and gaskets). Tunnel rams of all types prohibited.
EFI: Only accepted, commercially available, mass-produced, EFI-runner type EFI intake manifolds permitted. (i.e., Edelbrock Performer RPM, Victor 5.0, FAST LSX, etc). Fabricated, composite, and/or sheet-metal lower intake manifolds prohibited. Any height spacer permitted between EFI upper and lower intakes only. All runners must be completely separated from each other runner. Spacer or gasket must not create a ‘plenum’, or any other means for air to pass between runners. Short-runner or ‘box’ upper EFI manifolds are permitted, and may be constructed of cast aluminum, or composite, however they must be mass-produced and commercially available. Carbureted
EFI-conversion type manifolds are not accepted for EFI use.
1.22 SOLENOIDS
SOLENOIDS: A maximum of one nitrous, one fuel, and one purge solenoids with a single orifice each permitted. The nitrous solenoid is permitted a maximum orifice of .125-inch. Progressive systems are permitted one additional solenoid for progressive operation only.
1.23 TURBOCHARGERS
Only one turbocharger permitted.
SINGLE TURBOCHARGER: Accepted single turbochargers are permitted with the following requirements: Turbocharger must be of conventional impeller and housing design and type. Turbocharger is limited to a maximum size of 70.0mm / 2.755 inch inducer wheel diameter at the point where the leading edge of the compressor wheel meets the inlet housing. Inlet housing is permitted a maximum inlet diameter of 2.814-inch where the leading edge of the compressor wheel meets the housing. All air entering the turbocharger must pass through the turbocharger inlet. Injection of any liquid, gas, or any other substance into the inlet or exhaust housing prohibited. Turbocharger compressor wheel must be constructed of cast or billet aluminum. Exotic material wheels prohibited. The tips of the impeller wheel may not be stepped, cut down, or notched to meet impeller tip-to-tip dimension. (.500-inch will define the tip of the impeller wheel). Turbocharged engines may not source air from hole in bumper and/or from front valance.
1.24 AFTERCOOLER/INTERCOOLER
AFTERCOOLER/INTERCOOLER: Entries may run intercooler or aftercooler with 100-lb weight adder. Intercooler may be air-to-air, or air-to-water, but must be fully located in engine compartment, or in front of engine firewall. Intercooler water tank and pump may be located in rear trunk area.
1.25 POWER ADDERS
POWER ADDERS: A single power adder is permitted. See sections 1.9, 1.12, & 1.23.
1.26 CRANKSHAFT
CRANKSHAFT: Stock or aftermarket steel crankshaft permitted. Internal balancing permitted. Modifications to crankshaft permitted. Composite, or multi-piece, crankshafts prohibited.
1.27 CONNECTING RODS
CONNECTING RODS: Stock or aftermarket cast, forged, or billet steel connecting rods are required. Connecting rods may be free floating or press fit. Composite and aluminum connecting rods prohibited.
1.28 HEAD GASKETS & QUENCH AREA
HEAD GASKETS & QUENCH AREA: Unrestricted. Any type single head gasket permitted.
1.29 PISTONS, PINS, RINGS
PISTONS, PINS, RINGS: Stock or aftermarket flat-top, dome, or dish pistons permitted. Pistons may be above or below deck. Any rings permitted.
1.30 BOOST CONTROLLERS
BOOST CONTROLLERS: Permitted on turbocharged entries only.
1.31 WASTEGATE & PRESSURE REGULATOR
WASTEGATE & PRESSURE REGULATOR: Wastegates are permitted on turbocharged entries only.
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 prohibited.
1.33 “O” RINGING OF BLOCK
“O” RINGING OF BLOCK: Permitted.

2: DRIVETRAIN
2.3 CLUTCH
CLUTCH: Standard factory-replacement-style single disc diaphragm clutch required. Steel or aluminum pressure plate a minimum of 10.0-inch in diameter is required. Adjustable and/or long-style pressure plates are prohibited. Clutch operation must be operated using any linkage type.
2.4 DRIVESHAFT
DRIVESHAFT: Steel or aluminum OEM driveshaft required.
2.5 FLYWHEEL
FLYWHEEL: Permitted.
2.11 REAREND
REAREND: Any automotive type rearend permitted.
2.12 MANUAL TRANSMISSIONS
MANUAL TRANSMISSION: Only specified O.E.M. or specified aftermarket transmissions permitted. Overdrive gear(s) may be removed. Clutchless models prohibited. Any gear change must occur from direct action by the driver. Pneumatic, electric, hydraulic, etc. shifters prohibited. Pro-shifting is permitted. All transmissions must use either a) as produced, as supplied (unmodified) OEM gears and/or gear sets for transmission used or b) specified stock replacement helical cut gears and/or gear sets in the exact form as submitted for consideration and accepted by NMCA-Edelbrock. Gears and/or gear sets may not be utilized from other models (i.e. T-56 gears may not be used in T-5 transmissions). Transmission used is required to have a gear ratio in all gears as offered by the transmission used. Welding or grafting part of one countershaft to part of another counter shaft will not be accepted.
2.12a) PERMITTED MANUAL TRANSMISSIONS:
Tremec T5, Tremec T45, Tremec T56, Tremec TR3550, Tremec TR3650, Tremec TKO, Tremec TKO-500, TKO-600, & Tremec TKOII.
2.12b): SHIFTER: Must be commercially available bolt on shifter. Must have a single handle and attach to the transmission using only a) the OEM type mounting bolts in the OEM mounting holes and b) must use a single pivot-ball type shifting arm.
2.12c) PERMITTED GEAR RATIOS:
Tremec T5 (a) - 3.35, 1.99, 1.33, 1.00
Tremec T5 (b) - 2.95, 1.94, 1.34, 1.00
Tremec T45 - 3.37, 1.99, 1.33, 1.00
Tremec T56 (a) - 2.66, 1.78, 1.30, 1.00
Tremec T56 (b) - 2.97, 2.07, 1.43, 1.00
Tremec TR3550 - 3.27, 1.98, 1.34, 1.00
Tremec TR3650 - 3.38, 2.00, 1.32, 1.00
Tremec TKO/TKOII - 3.27, 1.98, 1.34, 1.00
T5 w/G-Force PN#5000 Dog Ring - 2.92, 1.99, 1.34, 1.00
T5 w/G-Force PN#5000 Syncro - 2.94, 1.94, 1.34, 1.00
Tremec TR3550/TKO/TKOII w/Liberty Gear PN#LG3500 - 2.92, 1.95, 1.34, 1.00
Tremec TKO-500 - 3.27, 1.97, 1.34, 1.00
Tremec TKO-600 - 2.87, 1.89, 1.28, 1.00
2.13 PURPOSE BUILT TRANSMISSIONS
PURPOSE BUILT TRANSMISSIONS: Prohibited.
2.14 AUTOMATIC TRANSMISSIONS
(OEM American transmissions or replicas of OEM American transmissions that use planetary gears.) Any OEM automatic or automatic overdrive automatic transmissions with torque converters originally produced by any American automobile manufacturer permitted. Lock-up transmissions/torque converters prohibited. Transmission-to-engine adapters permitted. 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.
2.14a TRANS BRAKES
Trans brakes are permitted.

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. Any other electric, pneumatic, or hydraulic device in the system is prohibited. Line-lock is prohibited on rear wheels/brakes, restricted to front brakes only.
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: Manual or power assisted aftermarket steering system permitted.
3.4 SUSPENSION, general
SUSPENSION, GENERAL: This eliminator is designed for stock chassis, stock frame rails, and stock type front suspension. Rear suspension is required to be stock. Back half type chassis prohibited.
FRONT WHEEL DRIVE CONVERSIONS PROHIBITED.
3.4 SUSPENSION, FRONT
FRONT SUSPENSION:
3.4a) K-MEMBERS: Stock, aftermarket, or tubular type 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: OEM strut towers/shock tower required.
3.4c) CONTROL ARMS: OEM or aftermarket, stock-type replacement, control arms permitted.
3.4d) SHOCKS/STRUTS: Stock replacement type struts and shocks permitted in stock location. Coil-over front springs & shocks are permitted. Shocks & struts must resemble OEM components in length and type. Shocks must be stand alone and may not be adjustable during run via electronic and/or other means. Electronic programmable shocks prohibited.
3.4e) SPRINGS: OEM replacement type aftermarket springs or coil overs are permitted.
3.4f) COIL OVERS: Coil over shocks and struts permitted.           
3.4g) CAMBER/CASTOR PLATES: Bolt on type camber plates permitted.
3.4 SUSPENSION, REAR
REAR SUSPENSION: Stock type suspension, including leaf springs or stock 3 or 4 link permitted. Rear coil-over shocks prohibited.
Stock Type Suspension: Stock type suspension may utilize aftermarket, direct replacement type suspension components including aftermarket replacement shocks, springs (in factory location), leaf springs (may be moved inboard), and/or control arms. All stock type 3 or 4 link suspensions must maintain stock lateral angles and attachment points, but may be moved up or down on rear axle. Aftermarket torque arms permitted, if OEM equipped with torque arm. Attachment point of torque arm on body or frame may be relocated, but OEM attachment point at rear end must be retained. Aftermarket leaf spring kits permitted.
3.4a) 4-LINKS: Racing style 4 link suspensions prohibited.
3.4b) LADDER BARS: Prohibited.
3.4c) 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. Leaf springs only may be moved inward for tire clearance if required.
3.4d) PANHARD BARS: Panhard bars permitted to control lateral movement of rearend housing. Panhard bars must be located aft of rearend housing, and control only lateral rearend movement. Panhard bars may be welded.
3.4e) SWAY BARS: Aftermarket or factory sway bars permitted. Aftermarket sway bars may be welded to both chassis and rearend housing.
3.4f) TORQUE ARMS: Permitted, if OEM equipped.
3.4g) REAR SHOCKS & SPRINGS: Aftermarket stock replacement style rear shocks and springs located in the OEM location (must bolt-in to standard mounting locations) are the only permitted. Shocks must be stand alone and may not be adjustable during run via electronic and/or other means. Electronic programmable shocks prohibited.
3.4h) TRACTION BARS: Bolt-on traction bars permitted provided front mounting point is no further forward than stock front spring eye on leaf spring equipped vehicles or stock front mounting point for control arms on coil spring equipped vehicles. Weld-on conventional-type traction bars permitted.
3.6 WHEELIE BARS
WHEELIE BARS: Prohibited.

4: FRAME
4.4 FRAME
FRAME: Stock, unaltered frame rails required in front sub frame. Sub frames on embodied cars may be joined under car. Stock rear sub frames are required, but outer frame rail portion only may be notched for tire clearance only. When notching, stock inboard section of rear frame rails must remain stock, unaltered, and in stock location. Rear frame rail must remain in OEM stock condition in all areas. Notching for rearend clearance prohibited.
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 + or - 1 inches of stock. Maximum variation from left to right and front to back of 1 inch.

5: TIRES AND WHEELS
5.1 TIRES
TIRES–FRONT: Front tires must have a minimum tread width of 4.5 inches.
TIRES–REAR: Tires must be D.O.T. accepted. D.O.T. street slicks or street-type D.O.T. radial tires are required.
D.O.T. Street Slicks: D.O.T. approved street slicks permitted, as measured, up to 28.0-inch tall x 9.0-inch wide, as measured, with a 88-inch maximum circumference. (Example: Mickey Thompson ET Street 28x11.50-15LT.) Tires must be D.O.T. approved. Tire width will be measured by a “go-no go” gauge. Tire width and height will be measured after conclusion of run at scale area. Tire tread may not extend outside fenders. Tire shaving prohibited. Examples of accepted tires include Hoosier Quicktime, Hoosier Quicktime Pro, and Mickey Thompson ET Street.
D.O.T. Drag Radial: Drag radial tires must be suitable and designed for street use. Tire tread may not extend outside fenders. Tire shaving is prohibited. The following sidewall designation D.O.T. drag radial tires are the only designations permitted: 275/40; 275/50; 275/60. Racers competing with a permitted D.O.T. drag radial may deduct 125 pounds.
5.1a) Permitted street-type D.O.T. radial tire list:
BFGoodrich Comp T/A Drag Radial
BFGoodrich G-force T/A Drag Radial
Nitto NT555R Drag Radials
ALSO ACCEPTED: any approved radial-construction tire with a D.O.T. tread wear rating of 180 or greater that fits all other criteria and sizing.
5.2 WHEELS
WHEELS: Spindle-mount front wheels prohibited.

6.1 INTERIOR
INTERIOR, GENERAL: Must maintain stock appearance; including factory OEM dashboard, headliner, & steering column cover. Heater/air conditioners may be removed.
6.4 CARPET
CARPET: Floor and tunnel where visible must be upholstered or carpeted. Headliner required.
6.5 SEATS
SEATS: Upholstered OEM or aftermarket seats (2) in stock location is required. Rear seat may be removed when roll bar/roll cage is installed; area must be carpeted or upholstered.
6.6 DOOR PANELS
DOOR PANELS: Door panels must be covered and stock appearing.
6.7 STEERING COLUMN
STEERING COLUMN: Stock O.E.M. or stock type steering column required. Removable steering wheel permitted.
6.8 GAUGES
GAUGES: Aftermarket gauges may be installed in factory dash.
6.9 PEDALS/PEDAL LOCATION
PEDALS/PEDAL LOCATION: Stock type pedals, linkage, and location required.
BODY: Vehicle must retain original appearances and profiles for year and make of body. Original O.E.M. body shell (unibody structure from firewall to taillight panel must be intact).Only 1950 & newer American production body styles permitted. Only lightweight body panels, carbon fiber, aluminum, or fiberglass, are restricted to hood, bumpers, and trunk-lid/hatch/deck-lid. Hood and/or trunk lid must be hinged or lift off. Funny car bodies prohibited. Body must be finished and painted. Alterations or aerodynamic modifications such as “chopped tops”, “channeling”, “sectioning”, “shortening” or “scaling down” prohibited. 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: Graphics (for advertising or creative purposes) permitted on entire body, including doors, hood, rear quarter panels, front fenders, spoiler, etc.
CONTINGENCY DECALS: In order to be eligible for NMCA official contingency program, all contingency decals are required to appear only on the rear quarter windows or rear window in a clear and organized fashion. Contingency decals may not be overlapped or modified. Other decals and sponsorship (non-contingency) may appear on bodywork, front end, and on windows.
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: Aftermarket rear spoilers permitted.
7.5 FIREWALLS
FIREWALL: Stock, unaltered firewall required.
7.6 FLOOR/TRUNK PAN
FLOOR: Stock, unaltered floor-pan, except for through the floor sub frame connectors and shifter clearance, required from firewall to back bumper. Flat area of floor-pan starting at “kickup” for rear end and rearward may be replaced with a minimum of .024” inch thick steel or .032” inch aluminum. Magnesium is prohibited. Transmission tunnel
must remain stock & unaltered. Removable floor-pan sections and/or transmission tunnels prohibited.
7.7 HOOD/SCOOP
HOOD/SCOOP: OEM or aftermarket hood permitted. Cowl induction hood configurations permitted. Aftermarket forward facing hood scoops prohibited. OEM forward facing hood scoops prohibited. Forward mounted scoops must be closed during competition. Cowl induction hoods restricted to a maximum of 7 inches tall as measured via the NMCA hood gauge, from the base of the hood where the hood meets the fender line along the entire length of the hood. The entire induction system must be completely covered by hood. Hood must be attached separately in a conventional manner and must be lift off or bolt on.
7.9 WINDSHIELDS/WINDOWS
WINDOWS: OEM safety glass required. Driver and passenger windows must be closed during racing. Window tint is prohibited forward of the “B” pillar.
7.10 BUMPERS
BUMPERS: Front and rear bumpers must be duplicates of originals and may be made of steel, aluminum, 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: Stock grille required. Blocking of grille to prevent air passage is prohibited.
7.13 WHEELWELLS
INNER WHEELWELLS: Aftermarket wheel tubs permitted. Material used to add to the width of the inner wheelwell may be steel or aluminum, or fiberglass.
OUTER FENDERS: Leading and trailing edges of fenders may be trimmed for tire clearance, maximum 2”.
7.14 RAM AIR/ENGINE AIR PANS
RAM AIR: Headlights/Tail Lights/Hazard Lights may not be removed/modified for air induction. Carbureted naturally aspirated and nitrous entries may only get induction air from under hood, no ram-air or air pans are permitted. Supercharger or turbocharged entries may get induction air from under hood or inner fender. No direct forward
mounted air source is permitted.
7.15 DOORS
DOORS: Driver and passenger doors must be functional and operable from inside and outside of vehicle.
7.16 AERODYNAMICS
AERODYNAMICS: Taping of any body parts, seams, or front end prohibited. Removal of side mirrors prohibited.
7.17 BODY KITS
BODY KITS: Accepted, commercially available body kits permitted. Filling in the lower valance for aerodynamic purposes prohibited.
7.18 COWL AREA
COWL AREA: Complete OEM cowl required.
7.19 FRONT FENDERS/FRONT FASCIA
FRONT FENDERS/FRONT FASCIA: Stock factory front fenders/front fascia required. May not be one-piece and/or removable.

8: ELECTRICAL
8.1 BATTERY
BATTERY: Battery may be relocated. Charging systems including stock replacement alternator must be operative, may be relocated.
8.3 IGNITION
IGNITION: Any battery operated ignition permitted. Distributor drive system must be stock O.E.M. as produced. Crank trigger is permitted.
8.5 STARTER
STARTER: All entries must be self-starting with on-board starter.

9: SUPPORT GROUPSORT 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 RECORDERS
ONBOARD DIAGNOSTICS/DATA RECORDERS: Onboard diagnostics and data recorders used to monitor and record parameters such as a driveshaft speed, acceleration, nitrous timing, chassis strain, and suspension travel etc., prohibited. Stand-along wide band oxygen sensors and recorders permitted, however device may not be capable of data logging additional sensors and/or analog inputs, with the sole exception of tachometer signals. Any wide-band 02 device must be capable of only logging air/fuel ratio, and/or engine speed, and may not be run in closed loop with EFI or ignition system. Only a single 02 sensor is permitted to be installed in header collector only. “Playback” tachometers permitted (i.e. Autometer Dual Channel Ultimate II tachometers, and the use of its features). Laptops prohibited in vehicle.
9.7 BOTTLES
BOTTLES: Any bottle must be securely mounted, stamped with a minimum DOT–1800lb. rating, and identified as nitrous oxide. Bottle located in driver’s compartment must be equipped with the correct relief valve per manufacturer recommendations and vented outside the driver’s compartment. Bottle is limited to one 10-lb. bottle. 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 bottle in vehicle is prohibited.
9.8 TOW VEHICLES
TOW VEHICLES: Vehicles may be towed to the rear of the staging lanes. Vehicles may not be towed from the return road. Vehicles may be towed from the scales

10: DRIVER

10.4 CREDENTIALS
CREDENTIALS: See General Regulations: CLASS & SAFETY REQUIREMENTS

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 the safety of participant’s vehicle and 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.
-LEGAL REQUIREMENTS:
12: STREET-LEGAL REQUIREMENTS:
Headlights and tail lights for year & make of body used mandatory. Head lights & tail lights required to be functional.

13: TRUCK GUIDELINES
1. Bedcovers permitted.
2. Tailgate must be closed during competition.
3. Full-size and compact pickups permitted.
4. El Camino-type vehicles must participate under passenger-car rules.
5. Rear-window glass may be replaced with Lexan for the purpose of accepting roll cage bracing that extends rearward from the cab.
6.Accepted modifications permitted to allow removal of bed from frame without removal of roll bar or roll cage bracing.

14: RULES ADJUSTMENTS, MID SEASON LOG
DATE: ADJUSTMENT:

• None at this time.