I think we all know what a differential looks like, but actually figuring out what all those little gears do can be a little tricky. We all know they turn at different speeds—but why? And when? And ...

The '63 and later aluminum Powerglide transmission is quickly becoming the most popular automatic for bracket racing, class drag racing (where legal), street machines, street rods and mileage ...

Jim Walker of Transmission Specialists checks parts for installation. All parts in above shot were required to adapt '52 Hydra-Matic to the '56 Chevy V8. We've just found out how to have your cake and ...