39. Don Yenko
When Chevrolet refused to build the big-block 427 Camaro that people wanted, Don Yenko stepped up to answer the call. His speed shop in Canonsburg, Pennsylvania, turned from race car support to production line in 1967 as new Camaros received heart transplants by the dozens. It wasn’t just any big-block engine that Yenko was bolting in though, it was 427-cubic-inch V-8 monster. The 375-hp, 396-cu-in big-block was the hottest Camaro offered from the factory, meaning these Yenko-prepped cars quickly became kings of the horsepower hill.