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 Chevy versus Ford debate is as old as these legendary car companies. The debate within the debate has long been GM 12-bolt versus Ford 9-inch. In truth the GM 12-bolt is a far more efficient axle ...

Let's face it, performance cars are all about discovering the weak link in the chain. As soon as you start making serious horsepower, what happens? You break a transmission or a rearend because it's ...