Last month we dug deep into the 8.75-inch rear end assembly from our 1971 Dodge Challenger R/T project. Like the vast majority of Mopar muscle cars, our 383 automatic Challenger came equipped with the ...

Backlash, pinion depth, tooth pattern, pinion and carrier-bearing preload—what does it all mean? When used in reference to an automobile, these terms usually apply to the rearend (or differential) and ...

A ring-and-pinion change is one of those mechanical operations that's both simple and complex. It's far below heart surgery, but many four-wheelers still act like they'd rather tackle open heart ...