When the guys at Trick Flow Specialties sent us out the door last summer with a fresh 350 under hood of our 1978 Malibu, they seemed to be taking bets on how long the transmission would last. "The ...

Follow the installation of a manual valve body on a built 4L60E transmission and see the key steps involved in the upgrade. The project offers a closer look at the components, setup process, and ...

Approaching four decades ago, automakers were scrambling for solutions to fuel economy woes, and GM was no exception. Computer-controlled carburetors and the birth of electronic throttle body fuel ...

With their debut in the 1990s, GM's 4L60E and 4L80E transmissions reveal some of their differences –- and similarities –- right in their names. The "4" and "L" respectively refer to the number of ...

General Motors' 4L60-E automatic transmission is one of the most popular transmissions ever built. It was initially designed to replace and modernize GM's older Turbo 700R4 — also known as the ...