2009 GS Nationals Buick Pro Street
Cars must weigh 3400 pounds minimum with driver. Buick bodies only. Cars must be fully painted. No lettering or racecar paint schemes.
Fiberglass hoods, decklids and bumpers are legal.
Two fiberglass front seats OK, rear seat optional if it interferes with roll cage, however, the exposed area must be carpeted or covered with upholstery.
Any cubic inch allowed. No Power Adders. Cars may run fuel Injection or multiple carbs if it fits under the hood. Any cylinder head designed for a Buick is legal.
No clutchless transmissions such as Lenco, Jerico, etc. Any torque converter is legal. Trans brakes are legal.
Any size exhaust system is legal it must extend beyond the driver seat toward the rear end and must have a commercially available muffler with the exhaust directed away from the car by means of a turnout.
No limit on gear ratio. Any rear housing is legal. Ladder Bar and Stock Style Suspension allowed. Stock Frame Rail from Firewall Forward - NO Tube Chassis Front End
Fuel cells legal. Gasoline is the only fuel allowed. No nitrous
Back half cars legal. Any rear tire. Any front tire/wheel combo legal.
1970 GS Stage 2
Going back to street car status with original 10-bolt, and 4 gear
1970 GS Stage 1 Stock Appearing
10.74 at 125 and falling
GSCA #19
Cars must weigh 3400 pounds minimum with driver. Buick bodies only. Cars must be fully painted. No lettering or racecar paint schemes.
Fiberglass hoods, decklids and bumpers are legal.
Two fiberglass front seats OK, rear seat optional if it interferes with roll cage, however, the exposed area must be carpeted or covered with upholstery.
Any cubic inch allowed. No Power Adders. Cars may run fuel Injection or multiple carbs if it fits under the hood. Any cylinder head designed for a Buick is legal.
No clutchless transmissions such as Lenco, Jerico, etc. Any torque converter is legal. Trans brakes are legal.
Any size exhaust system is legal it must extend beyond the driver seat toward the rear end and must have a commercially available muffler with the exhaust directed away from the car by means of a turnout.
No limit on gear ratio. Any rear housing is legal. Ladder Bar and Stock Style Suspension allowed. Stock Frame Rail from Firewall Forward - NO Tube Chassis Front End
Fuel cells legal. Gasoline is the only fuel allowed. No nitrous
Back half cars legal. Any rear tire. Any front tire/wheel combo legal.
1970 GS Stage 2
Going back to street car status with original 10-bolt, and 4 gear
1970 GS Stage 1 Stock Appearing
10.74 at 125 and falling
GSCA #19
