As you’ll recall, we previously reported on the 2015 Corvette Z06 belonging to aftermarket tuning group Vengeance Racing, who took delivery of the car, and then immediately threw it on the dynamometer. They saw impressive figures at the driven wheels: 585 HP, and 611 ft-lbs of torque.
Assuming the standard, estimated 15 percent driveline loss, that equates to 688 HP and 719 ft-lbs at the crank.
But then, we got test numbers from a different source: the folks at High Tech Corvette. They tested 572 HP and 589 ft-lbs at the wheels – or about 673 HP and 693 ft-lbs at the motor. That’s still more than the Chevrolet claimed 650 each, horsepower and torque, but not quite as optimistic as VR’s numbers, and the disparity is large enough to warrant some caution.
So whose numbers are closer to what we can expect in the real world? We don’t know. To their credit, the folks at High Tech Corvette provided quite a few details regarding their dyno process: a Mustang 1100 was used, with a weather station hookup for real-time weather correction, and the motor was warmed prior to the run to “simulate real world conditions.”
While we can’t find anything regarding Vengeance Racing’s process, in no way do we anticipate any number-fudging or sleight of hand. Instead, a major factor likely was the pre-warming of HTC’s Corvette Z06; as we learned just earlier today, the Z06’s ECM is set to protect the engine and emissions.
We of course look forward to still more dyno numbers, especially after the Corvette Z06s belonging to Vengeance Racing, High Tech Corvette, and others, pass the minimum break-in mileage.