1970 Chevy Chevelle SS 454

The 454 cubic-inch engine in the Chevelle LS-6 is the most potent powerplant ever placed in a production muscle car, producing 450 horsepower and 500 foot-pounds of torque. Due to additional weight and inherently weaker frame, very few of these monster engines ever found their way into a convertible. The Volo Auto Museum example is one of only 20 Chevelle LS-6 convertibles produced in 1970 with the famed M-22 Rock Crusher 4-speed transmission. According to contemporary sources, a 450 horsepower LS6 equipped SS 454 could run 0 to 60 mph in 6.1 seconds and cover the quarter mile in 13.44 seconds at 108 mph.