For most of automotive history, horsepower numbers have increased in increments, thanks to a sharper camshaft here, or a bigger carburetor there. The supercar era of the 1980s and 1990s saw ...

For most of the 20th century, American performance engineering operated on a simple principle: more cubic inches, more power. Displacement was the currency. The muscle car era ran on 7.0-liter V8s.