Modern engine bays are filled with black plastic where bright cast aluminum once sat, and few parts symbolize that shift more ...

Metal valve covers can last longer, but modern cars use plastic because they're cheaper and lightweight, reducing cost and ...

Time was when a valve job was done with some valve-grinding compound and a vacuum cup on a stick. But no more. Today's high performance engines require the same machining precision in the valves that ...

The Chevrolet small-block engine was a brilliant piece of engineering, attested by the fact that well over 100,000,000 were built. However the first generation was not as oil-tight as later ...