Introduced in 1970, the Chevy 454 -- affectionately known as the Rat Motor -- was the largest displacement Chevrolet engine to enter the big-block engine showdown of the muscle car era.

Famously featured under the hood of the 1970 Chevy Chevelle SS 454, the 454 V8 is a big-block engine that helped define the golden age of muscle cars. Very few engines ever came close to the power ...