Oldsmobile Differential Carriers

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

Learn what gear oils do for your differential and how to choose the best gear lubricant for your application's needs

A brief overview of the steps Speedway Motors takes to ensure you get a quality differential.

A short article explaining the main differences between open and limited slip differentials.

This resource contains a transmission pan shape ID chart and other tips to help with identifying GM transmissions.

Happy Father's Day from Speedway Motors! Here are a few of our favorite stories about dad.

Learn how to install a side detent shifter in a 1969 Chevy C10.

This is more than the story of a vintage sprint car. It's also the story of how a dynamic duo of "Speedy" Bill Smith and Jan Opperman toppled giants at the 1976 Hulman Classic.

Take a look at this traditional steering diagram and information!

Learn about GM alternator identification in our guide. We cover GM 3 wire alternators, 1 wire alternators, and externally regulated so you know what to choose.