To handle great amounts of horsepower generated by large-displacement engines, a vehicle requires a robust and solid transmission to ensure it can effectively distribute said power to the wheels. That ...

When a 4L60 won't cut it and a Turbo 400's lack of overdrive has your engine howling on the highway, a 4L80E might be the solution to your transmission woes. Tracing its roots to the Turbo-Hydramatic ...

Our 5,400-pound, 400hp 4x4 has chewed through no less than four 4L60E four-speed automatic transmissions in less than a decade. The failures have included: a smoked torque converter clutch, which ...