The 1969 and 1970 model years are often referred to as the "golden years" of the Chevelle. The 1969 model featured a completely redesigned exterior, with a new fastback body style and a distinctive "flying buttress" rear roofline. The SS 396 package was still available, but it was now joined by the even more powerful SS 396 396 cubic-inch engine, which produced 375 horsepower.

The 1973 model year marked the final year of production for the Chevelle. The car received a facelift, with a new grille and a revised rear end. However, the muscle car era was coming to an end, and the Chevelle was eventually replaced by the Chevrolet Monte Carlo.

The 1970 model year saw the introduction of the LS6 454 engine, which produced a staggering 450 horsepower. This engine was only available in the SS 454 package, which also included a heavy-duty suspension and a unique hood with a functional air scoop.