While we can't blame you for involuntarily convulsing in laughter after reading that last line, Mike Kurtz of Century Transmission is about to make good on that claim. With GM's recent updates to the ...

Cheap turbo + junkyard LS = big power. The formula has been proven multiple times. However, significant power won't last long with a junkyard transmission. Thanks to the aftermarket, there are several ...

Upgrading an FE engine to modern performance expectations is easy to do, as we've proven in the past couple issues with our Formidable FE build series. We managed to build a bulletproof engine that ...

The 4L60E and 4L80E are two of General Motors’ most discussed automatic transmissions, and the choice between them shapes how a truck, SUV, or LS swap behaves on the street and under heavy load. Both ...

A few months back we detailed the buildup and testing of our street 4L60E trans with help from our trans man Jimmy Galante and parts from Sonnax and TCI Automotive. But that was only half the battle.

Poor reliability is a car problem that isn't as prevalent as it used to be. Automatic transmissions were among the worst offenders, with some going from smoothly shifting between gears while ...

You likely had one of two reactions when you read "4L60E." It was either a slight shrug as you vaguely remembered that you had a 4L60E in your reliable, daily-driven ...