What is pontiac 454?

The Pontiac 454 engine was a large V8 engine manufactured by General Motors from 1970 to 1976. It was primarily used in the Pontiac Firebird and Chevrolet Camaro muscle cars. The engine had a displacement of 454 cubic inches, or 7.4 liters, and produced between 345 to 390 horsepower, depending on the year and configuration. It featured a cast-iron block and cylinder heads, hydraulic lifters, and a 4-barrel carburetor. The Pontiac 454 was known for its high performance and reliability, making it a popular choice among car enthusiasts and drag racers. However, due to tightening emissions standards in the 1970s, output was reduced and the engine was eventually discontinued.