AC C4 Muscle & Classic Car Transmission Parts

Concerned about a transmission swap? Our engine transmission compatibility checker will help confirm what you need to make it happen.

Who gets your pick as the best manufacturer from the golden age of the muscle car wars?

Prepare your classic muscle car for autocross competition by exploring the best options, beginner tips, and essential suspension upgrades.

I'm sorry to have to tell you this, but the '64 GTO was not the first muscle car.

Learn how to install our new Muscle Car Shifters from Lokar.

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!

Learn how Zach replaces a transmission and breakaway converter in his 55 Chevy, with some helpful tips along the way.

Ford’s small block and big block engine families have their share of flexplate differences. We’ll show you what to look for in this buyer’s guide.

Learn what goes into setting the fuel for your engine and how to change the density altitude, ADR, main pill and high speed pressure to optimize a/f ratio.

Speedway Product Manager Jeff K. talks about the old failing "Dealer Air" in his '46 Ford Sedan Delivery we've become familiar with, and the replacement unit from Vintage Air he got from Speedway Motors.