Pitching the stock differential out from under a GM car in favor of a 9-inch Ford has always been the best way to step up the drivetrain for drag racing. Since the price of used 12-bolts has ...
The 9-inch Ford rearend has been the standard all-around bulletproof rear gear for years-in fact it's been the leader since its introduction in 1957. Back in the day, the big Olds rearends were found ...