AMC 390 V8 Engine – 420 Horsepower

AMC was at one point a real player in the American auto industry. Nowadays, you have the big three, but back then drivers had the big four. AMC had a rough time in the 1960s and ’70s but the company still managed to build some good rides. The AMX was a car that was designed for serious performance, and the engine under the hood wasn’t bad either. The AMC 390 V8 engine had a whopping 420 horsepower (via Street Muscle Mag).

This car was a popular choice for gearheads because of its short wheelbase and great design. The car had the power people were looking for and a relatively affordable price tag. Unfortunately, it never sold well enough to stay on the market and didn’t compete with the big three. Nevertheless, there was some serious horsepower under the hood of the AMX that only a select few wanted to harness.