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30 Most Unusual and Innovative American Performance, Sports and Muscle Cars

Vukasin Herbez July 18, 2018

29. Chevrolet Corvette ZL1

The Corvette ZL1 was kind of a secret model but still it was one of the most unusual American sports cars. The heart of the ZL1 was the fantastic and basically racing-spec fully aluminum 427 V8 with up to 550 hp in mild tune. This monster of an engine was far more powerful than anything Mopar or Ford had in production at the moment. Chevrolet produced around 200 of those engines and while most of them went to Can-Am racing teams, Chevrolet also made around 12 test Corvettes with that engine inlate 1968. The performance potential was unbelievable and Chevrolet didn’t want to offer this wild racing engine to the general public, so the ZL-1 option was never mentioned in the press or official brochures.

30. Callaway Sledgehammer C4 Corvette

Rives Callaway established Callaway Cars in 1977, long after the muscle car craze winded down and high horsepower performance machines were just a thing of past. He specialized in producing turbocharger kits to be installed mostly on European cars. His knowledge, expertise and start of the turbo era perfectly lined up and the company really took off. In order to show the real potential of twin turbo C4, Callaway produced the legendary Sledgehammer Corvette, a highly modified and heavily turbocharged 1988 Corvette which had 898 HP and could go over 250 mph!

These are the top most unusual and innovative American performance and muscle cars available today. But, car fans know Detroit is working on more of them to offer in the future. Who knows what those designers are thinking up now.

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