The axle connects two or more of a vehicle's wheels to the same axis, whether on the front or back, and depending on how it's configured, the performance of your ride can vary greatly. Furthermore, ...

A few weeks ago, I went to the amazing Auburn Cord Duesenberg Automobile Museum in Indiana, where I learned about an axle that has not just one gear ratio like in pretty much all modern cars, but two.

In the automotive world, especially when it comes to off-road trucks and SUVs, differentials come up all the time. Is your differential locking, limited slip or open? Do you have a transfer case? One ...

Optional axle ratios can tailor pickup truck power and efficiency to suit your needs as long as the gearing keeps the engine in its torque sweet spot. Often overlooked, optional gear ratios play a key ...

Engine capacity, transmission speed, and drivetrain options are important factors when shopping for a pickup truck. But there is one area that shouldn’t be overlooked, and that’s choosing the right ...

Duck for cover! It's raining planetaries! In an era when six-, seven-, and eight-speed automatic transmissions are becoming commonplace, it won't be long before planetary assemblies start ...

'Seen our 505-inch RB Mopar mill? We gave you a look-see back in May and announced we were going to build it large with a stroker crank and huge cam. That got us thinking about the 831/44 rearend in ...

Your rear differential is one of the most unappreciated parts in your car or truck. It does what might be the hardest job of all of those components, multiplying torque from your transmission and ...