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.

Key takeaways: A small-block engine is smaller than a big-block engine, but size doesn't always determine power output. Small-block engines like the Chevy 327 and 454 big-blocks are iconic and have ...

However, some estimate that the L88's true output was around 560 horsepower. The Chevrolet 454 Big Block V8 was created during the muscle car era and was one of the largest engines of its time ...

The Chevrolet big block is one of the most storied engines in American automotive history, powering everything from pickup trucks to muscle cars. Like most other engines of its kind, the 454 lost much ...