Buick GS Waxes

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

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

In this budget build, a GM rear end is upgraded in order to hold 400+ HP. See how spherical bushings are replaced in a used 8.5” GM 10 bolt rear end.

Learn more about GM steering column identification, GM steering column lengths, and GM steering column compatibility.

Need a little help Identifying GM Body Styles 1964-1972? Click Here!

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