GM B-Body Lowered Parts

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

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

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.

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

Speedway Motors, a manufacturer, retailer, and distributor of high-quality automotive and racing products, will feature a variety of new products and build projects in their booth (#23693) at the 2026 SEMA Show Nov. 3-6 in Las Vegas, Nev.

Our trusty old Project Chevelle gets turned up to 11 with a new G-Comp chassis and interior refresh before making its SEMA debut.