572 pump gas RB

fourspeed70 said
Im building a 572 pump gas motor in my backhalfed 70 Duster. Ive got 14x32 and I'm wondering what gear i need t go to?

For a drag car just figure out how fast it will go in the traps and then use the redline of the engine to determine the rear gear. For example, if you want to cross the stripe at 135 mph and 6500 rpm then you need a 4.56 gear with a 32 inch tire.