Between 1968 and 1970, Buick joined two of GM's other divisions in unveiling 455 cubic-inch V8s. Oldsmobile was first with its Rocket 455 engine, and Pontiac and Buick both followed suit in 1970.

Crate engines and diesel engines have been omitted ... Unlike the Olds 455, the Buick 455 boasted an oversquare configuration, but still had more torque than Oldsmobile's big block.