The flood gates opened in 1964 with the introduction of the Pontiac GTO. The GTO was the first of the classic muscle cars.
Ford was the next manufacturer to hit a home run with a performance car. The Mustang changed everything. Anyone with eyes saw that good performance, good looks and an affordable price sold cars. General Motors quickly added the Chevelle Super Sport, the Buick Gran Sport and the Olds 442 to its muscle car stable. The boys at mopar began stuffing HEMIs and big blocks into everything they could. Chargers, Coronets and GTXs all became legends. The rare HEMI and the much more practical and accommodating 440ci big blocks were street terrors. Ford had the Fairlane and the Galaxies for those wanting something a little larger than the original pony car.
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Muscle car
From Wikipedia,
http://en.wikipedia.org/wiki/Muscle_car