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

The Chevrolet 454 Big Block V8 was created during the muscle car era and was one of the largest engines of its time, with a displacement of 7.4 liters. The engine could produce 450 horsepower ...

GM had been working on an engine program to replace the Northstar with a new high-tech DOHC V8 for its luxury cars, but revealed today that the program's been cancelled. It's kind of easy to see ...

and the design allows large intake and exhaust valves to move large volumes of air through the engine. Chevrolet introduced its big block 454 in 1970 at the height of the muscle car wars.