It can be argued that there's no bigger bang-for-the-buck performance upgrade than new axle gears. Auto manufacturers are tasked with building a vehicle that is optimized for both highway efficiency, ...

Here is our 1967 Chevy C10 affectionately dubbed "Truck Norris" by former HOT ROD Editor David Kennedy. We've replaced the open-differential carrier in the truck 12-bolt with an Eaton Detroit Truetrac ...

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 ...

You push a truck hard enough – even a heavy duty model – and something’s going to give. When mechanic Dave Adair cracked the diff locker on his 2007 Chevy 2500 HD, he decided to step up to something ...

American Expedition Vehicles, better known as AEV, has introduced a new rear differential cover designed specifically for the 2023-and-newer Chevy Colorado and its corporate sibling, the GMC Canyon.