Our '96 Impala makes just under 500, so to avoid scattering our overdrive we upgraded our 4L60E to 4L65E specs. Here's how we did it. -Car Craft Magazine ...

With that problem figured out, we decided to dive into tuning our 4L60E. The EZ-TCU aggressiveness adjustment is separate from shift firmness.

Learn how to build a 4L60E transmission that can handle over 1,000 horsepower! We'll show you the steps and parts to achieve high-tech performance.

We found a used 4L60E out of a small-block Chevy-powered 1999 van for $200 and decided on a budget upgrade to handle roughly 500 hp.

The SEMA show will debut the TCI Automotive 4X Transmission Bellhousing Adapter and Flexplate Kit for the GM 4L60E transmission and Ford small block engine.

Powered by a fuel-injected LM7 Vortec engine paired with a 4L60E automatic overdrive transmission with a shift kit, this truck is built for smooth, modern driving.

Equipped with an M7 Vortec fuel-injected engine and a 4L60E automatic overdrive transmission with a shift kit, it delivers smooth, powerful performance.