1970 Chevrolet Chevelle SS 454 LS6: 13.44 secondsThis heavy muscle car didn't let its nearly 3,800 pounds slow it down at all. Hot Rod magazine's testing for a 1970 issue found that the Chevelle could reach the quarter mile in 13.44 seconds while going 108 mph, showcasing incredible speed and acceleration on the drag strip. In fact, this placed it as the second-fastest car of 1970 when using the F70-14 Firestone Wide Ovals, track-focused tires that could handle the car's heavy backside at fast accelerations. The Chevy Chevelle SS was introduced in 1969.In an attempt to make the Chevelle SS the most powerful muscle car of the time, it was given a 454 version of the Turbo-Jet big-block V8 engine in its LS6 version. With 450 hp, the LS6 is considered to have the most horsepower produced by a factory-built muscle car in 1970. It's quite rare to come across a 1970 The Chevelle SS LS6, costing upward of $82,000.