Corvette ZR1 Independently Dynos 530 Rear-Wheel Horsepower

Illustration for article titled Corvette ZR1 Independently Dynos 530 Rear-Wheel Horsepower

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]

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Ash78, voting early and often

Why do dyno sheets rarely register anything below 3k RPM, give or take? I'd like to see how low the flatness goes.