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 ...

Locking differentials are a type of differential used in vehicles to improve traction and handling, especially in off-road or challenging terrain conditions. The purpose of a locking differential is ...

There's no doubt that one of the most popular and most hyped rearends is the Ford 9-inch. As bulletproof as they come, it's become the go-to rear when it comes to a high-horsepower application, be it ...