Introduced in 1970, the Chevy 454 -- affectionately known as the Rat Motor -- was the largest displacement Chevrolet engine ...

The 8100, as it's sometimes called, was the last big block engine derived from the same basic design that brought us Chevy engines such as the 6.5-liter 396, 7.0-liter 427, and 7.4-liter 454.