The highest torque diesel engines ever made have turned up in everything from small commercial vehicles to powerful ...

Harley-Davidson has made a few engines that can keep going forever with the right amount of TLC. Here are 10 of them ...

6-cylinder engines are solid, tuneable, and sound sweet - they can also produce astonishing power outputs - like this monster ...

An experimental race engine that was canceled before it got to race, the Mark IIS "Mystery Motor" remains one of the most fascinating V8s built by Chevy ...