This engine's foundation is a factory-production 1976 Buick 455 block. On this particular engine, the bores cleaned up from the factory size of 4.312 inch to 4.325 inch with just a honing.

The Buick 455 V8 still holds significant status in the history books of American muscle. Here's what you need to know about the powerful engine.

In 1970, Buick left their mark on the original muscle car era with a monstrous big block V8 that could produce more torque than any engine produced in the U.S.

Discover the untold story of the 1970 Buick GS 455, a powerful and stylish muscle car that rivaled the best of its era.

Buick used technology that no other American brand was brave enough to attempt, and they didn't even need 8 cylinders to prove its capabilities.

Buick has a long and storied history, but it all started with an innovation we take for granted: the overhead valve. The only problem was, the notion ruined the fledgling company and then saved it.

During the 1960s every automaker got on the muscle car wagon, including upscale Buick. The 1970 Buick Skylark GS455 was the peak of luxury performance.

A 1971 GS 455 Stage 1 landed a two-out-of-three victory against a Plymouth GTX Hemi. The magazine's all-time-best list put the 1970 Buick GS 455 Stage 1 on the podium, below two other big-block ...

Check out why Tony Gomes's 1987 Buick Grand National is a 7 second beast and is one of a kind. Only at www.gmhightechperformance.com, the official website for GM High-Tech Performance Magazine.