GM PERFORMANCE PARTS - LSX DRAG RADIAL SHOOTOUT
NMCA SERIES 2008 RULES

GENERAL OVERVIEW:

This is a single POWER ADDER Shoot-out is a class developed for all LS powered GM cars and trucks.
All races are on a .400 Pro Tree and in a heads up format.
This will be an ALL RUN qualifying format.
Vehicles are required to be stock appearing and stock bodied.
All vehicles are required to pass NHRA safety inspection for ET and speed.
A Sportsman ladder will determine running order.
Vehicles must be driven to staging and to scales, can be towed after scales
Vehicles are required to run GM Performance Parts Sponsor decal and GM Performance Parts LSX Shootout license plate

ENGINE:

Only LS style small block engines are allowed.
GM manufactured aluminum or iron block required
Displacement will be verified by using the P&G method
Exhaust must be directed away from vehicle, outlet must be rearward of front tire
Exhaust cannot pass thru any body panel. Zoomies are prohibited
Gasoline is the only fuel allowed
Cylinder heads limited to OEM or OEM “Style” aftermarket head.
Billet cylinder heads are prohibited
Racer must be capable of verifying legal part # head during inspection to be deemed legal.
Any modifications allowed to legal heads
Dry sump oiling systems permitted

BALLAST:

Must be NHRA approved mounting - Maximum 100# per individual weight bar
No loose or unsecured ballast allowed and will be grounds for disqualification.

CARBURETORS / INDUCTION:

Any non-split carburetor permitted, maximum 2-carbs
Any EFI permitted
Any intake manifold allowed, including sheetmetal/fabricated manifolds

TRANSMISSION:

Any automatic or OEM style manual transmissions permitted (* see weights)
Any torque converter allowed. Lock-up type permitted.
Torque convertors not permitted with manual transmissions
Clutch-activated automatic transmissions (re: Clutch-flite) are prohibited

SUSPENSION:

Aftermarket K-members permitted
Fully tubbed or mini tubbed wheelwells and notched frame rails permitted
Factory rear frame rails required in OEM location
Wheelie bars are permitted
Stock type suspensions, ladder bars and non-OEM 4-links permitted
Coil-overs permitted
Front-wheel drive conversions prohibited

INTERIOR:

Must be original appearing.
Floors must be upholstered, headliners required
Passenger seat and rear seat be removed
OEM appearing dash required

BODY:

Forward facing hood scoops prohibited except for OEM type for non-nitrous applications
Forward facing hood scoops permitted for nitrous applications
Cowl induction hoods permitted, 6” max
OEM composite body panels permitted
Light-weight or fiberglass body pieces limited to hood, rear deck and bumpers
Overhangs must be OEM, Wheelbase must be OEM +/- 1”
Doors must be OEM material
Rear spoilers permitted, max. length 26”, may not be moulded into the body
Tinted windows are not permitted forward of the “B” pillar, per NHRA requirements

ELECTRICAL:

Electronic driving aids prohibited
Throttle stops, delay boxes and auto shifters prohibited
Two-step, trans-brakes and line-locks are permitted
Functional headlights, taillights and horn required
Any aftermarket ignition permitted
TIRES-WHEELS:
TIRES – FRONT: Front tires must have a minimum tread width of 4.5 inches.
TIRES – REAR: DOT Drag Radial Tires ONLY
The maximum allowed tire size is 295 as marked on the sidewall
ANY size wheel permitted
Bead-locks permitted

WEIGHTS:

Power Adder Max CID Base Weight
Nitrous Oxide 500 2800
Blower 500 3400
Turbo 500 3400

POWER ADDERS:

NITROUS OXIDE: Any nitrous system permitted including push systems. No maximum number of stages. 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. Nitrous oxide systems must use gasoline only for the fuel enrichment circuit.

SINGLE CENTRIFUGAL SUPERCHARGER: Any single centrifugal racing supercharger permitted that fits the following criteria: Inlet diameter - external OD 6” maximum, impeller inducer diameter 5.5” maximum, impeller exducer diameter 8.0”, discharge diameter - external diameter 4.00” maximum, housing diameter (greatest external diameter of housing not to include discharge) – 12.0” maximum. Injection of any liquid, gas, or any other substance into the inlet or exhaust housing is strictly prohibited. Supercharger compressor wheel must be constructed of cast or billet aluminum. Exotic material wheels prohibited.

SINGLE TURBOCHARGER: Accepted single turbochargers are permitted with the following requirements: 1) Turbocharger must be of conventional impeller and housing design and type. 2) Turbocharger is limited to a maximum size of 4.173” (106.0mm) - inducer wheel diameter at the point where the leading edge of the compressor wheel meets the inlet housing. 3) Inlet housing is permitted a maximum inlet diameter of 4.253” where the leading edge of the compressor wheel meets the housing. 4) Compressor wheel to housing clearance must maintain a maximum of 0.080” clearance beginning from a) where the leading edge of the compressor wheel meets the inlet of the compressor housing to b) the transition point where the trailing edge of the compressor wheel meets the volute. 5) 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 is strictly 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).

TWIN TURBOCHARGERS: Accepted twin turbochargers are permitted with the following requirements: 1) Both turbochargers must be of conventional impeller and housing design and type. 2) Turbochargers are limited to a maximum size of 76 mm/2.992” - inducer wheel diameter at the point where the leading edge of the compressor wheel meets the inlet housing. 3) Inlet housing is permitted a maximum inlet diameter of 3.072” where the leading edge of the compressor wheel meets the housing. 4) Compressor wheel to housing clearance must maintain a maximum of 0.080” clearance beginning from a) where the leading edge of the compressor wheel meets the inlet of the compressor housing to b) the transition point where the trailing edge of the compressor wheel meets the volute. 5) 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 is strictly 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).

PURSE:

Drag Radial Shootout Class:

• $3,000 Win + LS376/480 Crate Engine + Jacket + Plaque
• $1,500 R/U + Plaque
• $700 Semis
• $125 Quarters