Driveline and Axles

The pros and cons of a welded diff vs open diff, plus what to know before learning how to weld your differential.

Concerned about a transmission swap? Our engine transmission compatibility checker will help confirm what you need to make it happen.

Quick change rears have been around since the 1940s and while many are familiar with them, to others they’re a mystery we’ll help explain

GM’s 10-bolt rear axle has been around since the 1960s, here’s how to determine if your junkyard find is worth taking home

We help determine what are the best 10-spline quick change gear ratios for your street or racing needs

Using the proper U-joint size is critical to correct fitment and operation of your driveline's driveshaft.

Upgrading to (or updating a poorly designed) independent front suspension, or IFS, will vastly improve your classic muscle car, hot rod, or pickup truck’s braking and handling

The LS swap is no doubt still going strong, but if you’re planning to run an automatic behind your 4.8, 5.3, or 6.0L LS-powered ride, you’ll need to pay attention to a few items we discuss in this buyer’s guide.

Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. We’ll help you determine the correct flexplate for your Chevy engine in this buyer’s guide.

Posi, limited slip, Traction-Lok, or whatever your favorite brand calls it is how your rear axle provide equal traction to both tires, and trust us, you’ll need it! So, read all about posi units and their benefits here in our guide.