General Motors has spent decades refining overhead-valve V8s while much of the industry pivoted to dual overhead cam designs, ...

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 ...

Chevrolet’s small-block V8 has outlived entire automotive trends, surviving turbo crazes, multivalve revolutions, and now the industry’s pivot to electrification. The constant through all of that has ...

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 ...

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 ...