Buick GS Body Mounts and Hardware

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

Looking to update that '67-'72 C10 truck with an LS swap? These motors mounts and transmission crossmember kit will make that modern powerplant and transmission fit like they came that way from the factory!

Follow this visual guide on installing spacer rings for Buick style finned brake drums to help center the drum on the hub. Learn some tips on using old and new parts for the installation.

Kevin W. walks through each step of installing a new alternator bracket on a 454 Big Block Chevy.

Follow this guide on installing a Speedway Motors Billet LS Alternator Bracket. If you’re looking for a simple solution that looks good while solving positioning issues from factory brackets, then these brackets are for you.

Follow this step by step guide on how to install adjustable LS motor mounts to set your engine location exactly where you want it.

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.

These are the specifications for the alternator and A/C brackets from Bill's Hot Rod Company available at Speedway Motors.

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.