There are few things in the world of high-performance cars that are truly reliable. One would have to be the GM TH400 automatic. As durable as this three-speed juicebox is, there is still room for ...

When it comes to full-size 4x4 trucks and SUVs, the General Motors Turbo-Hydramatic 400 (TH400) automatic transmission is perhaps one of the most coveted automatic transmissions in existence. Thanks ...

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 ...