[VIDEO] Hennessey Puts the 2015 Corvette Z06 with a 7-Speed Manual on the Dyno

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Hennessey Performance Engineering recently decided to find out how much the 2015 Z06 convertible’s engine loses between crank horsepower and rear wheel horsepower. According to their dyno figures, the Z06, with the standard 7-speed transmission, produced 570 RWHP, down 12.4 percent from the crank figure of 650 HP. No word on the decline in torque,