With a manufacturer claimed peak power output of 755 horsepower, the Chevrolet Corvette ZR1 is far and away the most potent factory Corvette ever produced, standing head-and-shoulders above even the Z06 with its “measly” 650-horsepower rating. But of course, never one to leave well enough alone, the folks at Hennessey Performance Engineering have cooked up a range of performance-enhancing upgrade packages for the range-topping ZR1, although not without first putting the factory-original car on the dynamometer for a baseline reading.
You can watch Hennessey’s bone-stock 2019 Chevrolet Corvette ZR1 send its vast amounts of torque and power into the dyno rollers in the video above.
Hennessey’s testing revealed peak output of 654 horsepower and 645 lb-ft of torque at the rear wheels, which is right in the ballpark of where we’d expect given its factory engine output ratings. Assuming GM didn’t underrate or overrate the supercharged, 6.2L LT5, and that Hennessey’s dyno testing yielded accurate results, 654 rwhp points to drivetrain losses of a little over 13 percent – well within the realm of plausibility.
Sure, losing 101 horsepower between the flywheel and the rear tires sounds plenty less than ideal, but the more power you’ve got under the hood, the more you stand to lose to parasitic losses. Plus, as we all know, the Chevrolet Corvette ZR1 will still blow the doors off of most any US factory production car.
Hennessey Performance Engineering currently offers three different upgrade packages for the 2019 Chevrolet Corvette ZR1, rated at 850, 1,000, and 1,200 horsepower, respectively, representing some relatively cost-effective paths to get Bugatti Veyron-like power in a road car.