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.
Read more: 11 Best Motor Oil Brands In 2024, Ranked Chevrolet produces two complete 454 crate engine variations and a short-block version, sold through GM Performance and made available online by ...