1970 Chevrolet Chevelle

1970 Chevrolet Chevelle SS 454 â?" Muncie 4-Speed, Frame-Off Quality Restoration, Near Show-Quality Paint Why This Car Is Special The 1970 Chevrolet Chevelle SS 454 is widely considered the high-water mark of the American muscle car era. This was the year Chevrolet pulled out every stop â?" offering the 454 cubic inch big block V8 in the Chevelle for the first time, creating what many historians regard as the most potent factory muscle car package of the entire era. The base LS5 version of the 454 was rated at 360 horsepower, while the top-shelf LS6 carried an advertised 450 horsepower rating, though both figures were understood to be conservative. Road tests of the day put the 454-powered Chevelle in the mid-13-second range in the quarter mile right off the showroom floor.