Starting off with a 290 ci displacement, the engine was steadily developed ... Wanting to take it to its performance car rivals, AMC stroked the 390 in 1971 to birth a 401 ci V8.

The 401 doesn't quite have the same cachet as small- or big-block engines like the Chevrolet 350 V8, but it's developed quite a fanbase over the years. If you're interested in joining the AMC 401 ...