1972 Pontiac Firebird TA drag racing 1970 AMC AMX 1970 AMC AMX drag racing 1972 Pontiac Firebird Trans Am. Pure stock muscle car drag race. factory stock drag race. first car is a 1970 AMC AMX with a 390 V8 rated 325 horsepower. The other is a 1972 Pontiac Firebird Trans Am with a 455 V8 rated 300 (net) horsepower. Both cars have 4-speed manual transmissions. Rear gearing in the AMC is 3.91, while the Trans Am has 3.73. Remember, both cars participate in the Pure Stock Muscle Car Drag Race series, so please check out their website for the… Read More