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 ...

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 ...

QUESTION: I own a ’91 Chevy full-size pickup with four-wheel drive and need to know whether “posi-traction” is different from limited slip differential. I also need to know what I have on my truck. I ...

General Motors has issued a recall for certain examples of the Chevy Camaro sports coupe due to an issue related to the axle shaft retaining ring. The problem: in affected Chevy Camaro examples, the ...