As a high-performance enthusiast, you've undoubtedly heard the phrase free horsepower bandied about. It means horsepower that is lurking within your existing combination, just waiting to be released.

I don't think it would be possible to determine which is the most popular modification for C5s--custom and/or chrome plated wheels, custom cat-back exhaust systems, or high-flow induction setups.

In 1970, the GTO Ram Air IV was the most performant midsize Pontiac. However, the division was no longer required to use engines 400-cubic-inch or smaller anymore. It was the high-horse, high-buck, ...