The world's first 400-hp mass-market production cars were American and powered by a groundbreaking V8.

A late-1950s Mercury broke the 400-hp barrier years before muscle cars made big power famous, marking a forgotten turning point in Detroit.

If you're a regular reader or subscriber of Mopar Muscle, then there's no doubt you're familiar with our annual dyno competition. Each year we feature a different Mopar engine combination, giving ...