Factory turbo cars by the hundreds of thousands now cruise our nation's highways. That translates into plenty of used turbos just lying around waiting to be scooped up by the adventurous rodder for ...

It's the 4L80E that’s become the go-to choice for backing a big-power/big-torque engine, and for good reason. With its roots in the TH400, which was used with GM’s biggest-torque big-block engines of ...