The Most Powerful Chevy Engines of the 1970s

CHICAGO, IL - JULY 23: A Chevrolet emblem is displayed on the front of a dealership on July 23, 2014 in Chicago, Illinois. GM today announced the recall of another nearly 720,000 Chevrolet, Cadillac, Buick and GMC vehicles for various defects. (Photo by Scott Olson/Getty Images) /

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CHICAGO, IL – JULY 23: A Chevrolet emblem is displayed on the front of a dealership on July 23, 2014 in Chicago, Illinois. GM today announced the recall of another nearly 720,000 Chevrolet, Cadillac, Buick and GMC vehicles for various defects. (Photo by Scott Olson/Getty Images) /

The American Muscle Car era died in 1970 when the U.S. government passed the “Clean Air Act” to lower vehicle emissions and clean up the environment. As a result of government regulations American car manufacturers saw their horsepower numbers dwindle throughout the 1970s. Chevy was not immune to this as the following will show how much drop the Bowtie fell off in horsepower ratings.

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