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.
That said, Chevy did produce a handful of 1983 model ... Instead of fitting the 1971 Corvette ZR1 with that monstrous 454 big-block engine, GM gave the ZR1 a gnarly 350 cubic-inch V-8 engine ...