Check out the torque and horsepower numbers from a 2WD Denali 6.2L. Maximum baseline torque was 327 lb-ft and once the Magna Charger was bolted on, it made 420 lb-ft of torque. The maximum stock horsepower was 311 and with the Magna Charger the number grew to 425 hp. That's 114 hp (to the tire) in one day of work!