LSX Shootout

LSX All Motor Shootout Rules
General Overview
This is a Naturally Aspirated heads-up shootout-style drag racing class
Developed for naturally aspirated LS small-block-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 MUST pass NHRA/IHRA 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
LS-based small-block engines only
GM manufactured aluminum or iron block required
Displacement will be verified by using the P&G method
Maximum of two (2) mufflers mandatory
4-inch maximum exhaust exit size
Gasoline is the only fuel allowed
Cylinder heads limited to OEM or OEM-style aftermarket head
Billet cylinder heads prohibited
Canted-valve variations permitted with 50 pound weight adder
Cylinder head must be identifiable to verify legality
Any modifications allowed to legal heads

Ballast
Must be NHRA/IHRA-approved mounting
Maximum 100 pounds per individual weight bar
No loose or unsecured ballast allowed (will be grounds for disqualification)

Carburetors/Induction
Any single 4-bbl carburetor allowed
Any EFI system allowed
Any style intake manifold allowed, including sheet metal/fabricated manifolds
Production OEM intake manifolds (stock unaltered runner lengths) permitted a 50-pound weight break
Any modifications permitted, manifold must be identifiable

Transmission
Any OEM-style automatic or manual transmissions permitted (*see weights)
Any torque converter allowed (lockup-type permitted)
Torque converters not permitted with manual transmissions
Clutch-activated automatic transmissions prohibited (re: Clutch Flite)

Suspension
Aftermarket K-members allowed
Mini-tubs and notched framerails allowed
Factory rear framerail required in OEM location
Wheelie bars permitted
Stock-type suspensions permitted with stock mounting locations
Ladder bars permitted with 50-pound weight adder
Non-OEM four-links prohibited
Coilovers permitted
Front-wheel-drive conversions prohibited

Interior
Must appear original
Floors must be upholstered, headliners required
Two seats required in stock location, rear seat may be removed
OEM appearing dash required

Body
Hood, rear deck, and bumpers
Overhangs must be OEM, wheelbase must be OEM +/- 1 inch
Doors must be OEM material
Rear spoilers permitted, maximum length 26 inches (may not be molded into the body)
Tinted windows 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, transbrakes, and line-locks 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: Street-type or racing slicks permitted, maximum tire size as follows:
Actual measured tread of tire limited to 10.6 by 28.6 inches tall
Maximum rollout to be 90 inches, as measured at the tire edge
Actual tire width will be measured by a "go/no go" gauge after conclusion of run at scale area
Tire tread may not extend outside fender lip
W tires prohibited, tire shaving prohibited

WEIGHTS

A penalty of 8.5 lbs/ci applies for cubic inches over base weight-break limit, maximum cubic inch still applies
All weights are with driver and rounded down to the 5-pound increment (i.e., a calculated weight of 3,228 pounds would be required to weigh 3,225 pounds with driver at scales)
Special notes: Absolutely no nitrous or other power-adder equipment allowed on the vehicle
Nitrous plates, solenoids, soft or hard lines, nozzles, bottles, or disconnected super- chargers must be removed