Willys Differential Bearings and Seals

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

This veteran of the legendary "gasser wars" of the 60s looks right at home in the Museum of American Speed.

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

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

Decode, ID, and upgrade your GM 12-bolt rear end. Learn axle specs, gear ratios, and best performance parts upgrades.

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

How to clean and seal your old tank

Learn how to measure pinion depth with a ring and pinion setup tool. Follow as our tech Zach rebuilds a rear differential with the help of a pinion depth tool.

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.

Learn how to seal a head gasket properly! These tips will help you avoid blown head gaskets and head gasket leaks.