Corvette ZR1 Independently Dynos 530 Rear-Wheel Horsepower NASCAR’s Hendricks Motorsports picked up five Corvette ZR1 s at the Corvette Museum in Bowling Green last week with Jeff Gordon and Jimmie Johnson in tow. They promptly dropped two of the cars straight on a dyno in North Carolina to see just what the super-Vettes were making at the rear wheels. The results? 530 HP and 508 ft-lbs of torque. Considering the flywheel power is 638 HP, these figures are in line with the rule-of-thumb 15% driveline losses for rear-wheel-drive cars. After some tuning and adjustment, they managed to bump it up to 567 HP and 532 ft-lbs. Anyway, check out the complete dyno sheet yourself. [Corvette Blogger ]