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 ...

As certified gearheads it’s hard for us to leave a vehicle just the way the factory intended. Modifying our 4x4s is what we enjoy, and since you’re reading this magazine we’ll assume that you’re OK ...

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 ...