One of the most often mentioned muscle cars, the Chevelle went through several redesigns over the years of its popularity. Originating in 1966 as the "Super Sport" package for the '61 Impala, the recognizable Chevelle SS wasn't truly brought to market until 1966, when those classic forward-thrusting front fenders, special wheel covers, red-line tires and black-out grill were added to show off the car's bold new look. The 1966 Chevelle SS 396 was only produced in about 100 models, highly prized today. In fact, the high end of resale has gone from $28,000 to $369,000 in the last decade alone [source: CNNMoney.com].
In 1969, a special-order by Chevy dealers who couldn't sell the things fast enough was designated the Central Office Production Order, or 427 COPO, and released in a limited run of about 320 cars. It had 450 horsepower capability and an L-72 427-cid V-8 engine, proving the dealers wanted power.
The last great SS, 1970's 7.4-liter, had 450 horses and could hit 60 in a flat six seconds. With racing stripes and a nice interior, it was the people's choice.