By the end of the 1960s, the automotive world was pushing the boundaries in terms of the amount of power that series-production cars could make straight out of the factory. One of the best examples of this period of time was seen in America with the golden age of classic muscle cars. The 1960s started with most cars struggling to make more than 300 horsepower. All of a sudden, several muscle cars could make 400 horsepower, and some produced even more, such as the Ford Mustang Shelby GT500 in its most powerful 650-hp Super Snake iteration of the ’60s, of which only one was made, and the 450-hp Chevrolet Yenko Camaro.
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