Oldsmobile TH400 Parts

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

There's something special about your first car. Here are a few from the Speedway Motors team.

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

Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. We’ll help you determine the correct flexplate for your Chevy engine in this buyer’s guide.

Learn correct spark plug firing orders for SBC, LS, Mopar, AMC, and Ford V8s, and learn what the correct firing order means for performance.

Tim shows off the two Cadillac style air cleaners we have to offer.

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.

What cars are just so great that they deserve to be carved into the side of a mountain?Here's a list of suggestions from the Speedway Motors staff...

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.

How do we love old cars? Let us count the ways. Actually, that's what we're going to do here. Check out our decade by decade guide to some cars and details that we're head over heels for.