NASCAR’s Hendricks Motorsports picked up five Corvette ZR1s 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]