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What is the hp of 1976 454cu in Chevy engine?

The horsepower of a 1976 454 cubic inch Chevy engine varied considerably depending on the specific application and options. There wasn't a single horsepower rating. It could range from approximately 235 hp in a lower-performance version to over 270 hp in higher-performance versions. Some special high-performance versions even exceeded that. You'd need to know the specific engine code (often found on a casting number on the engine block) to determine the exact horsepower rating for a particular 1976 454.