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, but based on other tests, we’d figure that number is virtually identical to the RWHP, in other words, 570 ft-lbs.
Ironically, Hennessey did a similar dyno run on a regular Stingray, 3LT Z51 with an automatic transmission, back in September 2013, and the RWHP was down almost an identical percentage, 12.3 percent, dropping from a crank figure of 460HP to 399 RWHP and 400 ft-lbs of torque.
Anyway you figure it, the Z06 is one bad automobile for the money, especially considering you can get a base Z06 convertible for just $83,000 – though going heavy on the options could see you go well past the $100K mark.
One thing that sticks in the craw of any Corvette enthusiast is to have your favorite automobile get beaten by a Dodge Challenger SRT Hellcat, which dropped only 8.87 percent in a similar dyno run, going from 707 HP to 646 RWHP.
Still, we don’t think the Z06 would have much of a problem whipping the Hellcat on the track, thanks to its superior handling.
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