The SS used an all-aluminum 6.0 L V8 engine rated at about 430 hp (321 kW) and 430 lb·ft (583 N·m) of torque. The suspension of the SS was tuned for performance rather than comfort and emphasized its sporting characteristics. The integrated exhaust pipes on the bumpers of the SS were similar to those of historical muscle cars. An 8.0 L 850 hp (634 kW) engine was originally installed in the car, but it was removed.
Rear of the Chevrolet SS concept at the 2004 Los Angeles Auto Show
The design of the SS is a mix of styles and styling cues from both modern sports and muscle cars. It featured vinyl and leather seats, and it also had functions from earlier Chevrolet muscle cars such as the horseshoe-shaped shifter. There were modern electronics and functions such as a DVD player and an audio system complete with satellite radio.