Customer:"Hello? I'd like to buy an axleshaft for my Ford 9-inch rear axle." Salesperson:"No problem. Do you know what length, spline count, and wheel-bolt pattern you need?" Customer:"I really don't.

Engines get all the glory, but without a properly built differential, a Corvette is just relegated to noisy yard-art status. One of the biggest differences of early C1 Corvettes is their chassis. In ...

When building a project car, nothing is worse than having to re-buy performance parts. This is especially true today when every hot rod dollar needs to be stretched as far as possible. For instance, ...

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 ...