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Rules for 2008 Pro Stock Gas 4X4 6200 Lb. Class
ENGINES & DRIVETRAIN
- ALUMINUM HEADS PERMITTED, BLOCKS MUST BE CAST IRON.
- ALUMINUM INTAKES AND SINGLE FOUR BARREL CARBURETORS PERMITTED
- NO TURBOS, SUPERCHARGERS, OR INJECTION SYSTEMS.
- HEADERS PERMITTED.
- REAR SIDE OF BLOCK MUST BE 12" OR MORE BEHIND THE CENTER OF THE FRONT AXLE.
- 50 CU. IN. LIMIT
- PROFAB TRANSMISSIONS AND TRANSFERCASES PERMITTED
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FRONT ENDS MUST BE OEM. ROCKWELL REAR ENDS PERMITTED.
CHASSIS
- FACTORY FRAMES 1 TON OR LESS REQUIRED
a ) 4-door trucks permitted but must be same maxium wheel base as OEM
- SOLID SUSPENSION PERMITTED, NO REAR LEAF SPRINGS REQUIRED.
WEIGHTS
- FRONT WEIGHTS AND BRACKETS MAY NOT EXTEND MORE THAN 60 INCHES FORWARD FROM THE CENTER FRONT AXLE.
HITCH
HITCH MUST BE A MINIMUM OF 36" FROM THE CENTER OF THE REAR AXLE AND A MAXIMUM 26" HIGH.
HITCH CAN BE ADJUSTABLE, BUT IT MUST BE STATIONARY IN ALL DIRECTIONS WHILE PULLING.
THE HITCH MUST HAVE A 3.5” OPENING AND MUST BE HORIZONTAL TO THE GROUND BECAUSE OF THE HOOK BEING BIGGER THIS YEAR.
TRUCK
MUST HAVE FACTORY CAB AND DOORS.
FIBERGLASS HOODS, HOOD SCOOPS, FENDERS, AND BEDSIDES PERMITTED.
FLAT BEDS ARE PERMITTED AS LONG AS THEY ARE FACTORY BUILT OR HEAVIER.
TIRES
ANY STREET LEGAL DOT APPROVED TIRE.
MAXIMUM TIRE SIZE 36
" TALL AND 16" WIDE
CUT AND SHARPENED TIRES ARE ALLOWED
SAFETY
NO NITROUS OR ANY OTHER PRESSURIZED FUELS.
DRIVE SHAFT LOOPS, U-JOINT SHEILDS, BLOWPROOF BELLHOUSING OR TRANSMISSION BLANKET AND KILL SWITCHES ARE REQUIRED.
DRIVERS ARE REQUIRED TO WEAR HELMET AND FIRE SUIT.
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