Mopar A-Body Differentials

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

Learn what gear oils do for your differential and how to choose the best gear lubricant for your application's needs

A brief overview of the steps Speedway Motors takes to ensure you get a quality differential.

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

Need a little help identifying your Mopar? Here is a list of body styles broken down by year!

Comparing open diff vs limited slip vs locker differentials. Learn how each works, pros and cons, and which is best for your build.

Learn about the power behind the G-body platform and the steps to upgrade a 7.5" bolt rear end to a 8.5" to withstand high horsepower. See how to change the differential fluid and install new gaskets.

A short article explaining the main differences between open and limited slip differentials.

Determining the correct flexplate for your V8 Mopar-powered project takes a little understanding of how these engines were balanced. Our Mopar flexplate buyer’s guide will help.

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