Buick GS AN Fitting O-Rings

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.

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.

Dick from Koul Tools shares a tip on how to properly seat the AN fittings using the Koul Tools device.

What fittings should you use with your brake or fuel system? What does AN and NPT stand for? All of these questions plus more will be answered in Speedway Motors' latest article about fasteners!

Tim explains the process of adjusting Buick Finned Drums to fit Speedway's self-energizing backing plate assembly.

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.

Everyone loves boost and nitrous. But proper piston rings and end gaps are necessary to keep your engine alive. Lake Speed Jr. from Total Seal joins us to talk about the right rings for engines with nitrous and boost.

There are a lot of piston ring material types to consider for your next engine build. Our buyer’s guide will help you choose the right ones.

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.