4L60E, Muscle & Classic Car Parts

A real-world guide to 4L60 transmission specs, strength, and swap tips.

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

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

The LS swap is no doubt still going strong, but if you’re planning to run an automatic behind your 4.8, 5.3, or 6.0L LS-powered ride, you’ll need to pay attention to a few items we discuss in this buyer’s guide.

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

When Pat Orth isn't offering help and technical support on the phone at Speedway Motors, he's driving around in his clean, LS powered '64 Impala.

Learn how to convert an engine using a Carbureted LS Conversion Kit, along with tips for a smooth install. Read more on the manifold and timing control module, which comes with an MSD ignition control box and wiring harness.

This old sedan was untouchable in the early 60's.

Learn a few tips on how to properly mount Modified bodies and some products that will help get your race car body fabrication job done!

Jennifer Helgoth is a painter and prolific builder who has amassed an fleet of Cadillacs, including this '60 Series 62 with one amazing paint job.