The performance world is full of good tuning ideas. One place that is often overlooked in the search for more power is the exhaust system. For decades, knowledgeable drag racers have been using header ...

Kinnan and Smith were purposely quiet on specifics when building these two engines, yet they ended up amazingly similar. In many cases the brand names are different, but the ideas are the same. Big ...

British sports-car owners expect to see oil spots on their concrete. Like fast food and cholesterol, this comes with the territory. Fortunately, American engine-sealing technology makes newer Detroit ...