GM 7.625 Inch 10-Bolt, Differentials

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

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

Read up on GM 10 bolt ring and pinion installation instructions. Follow along as our employee Zach installs a GM 10 bolt rebuild kit from Motive Gear.

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.