Hennessey Performance Engineering was one of the first tuning shops to truly make some big numbers from General Motors’ beastly 755-horsepower 6.2-liter supercharged LT5 engine after the automaker encrypted the 2019 Corvette ZR1’s ECU and locked tuners out of its software.
When the ECU was finally cracked, HPE got to work applying a number of upgrades to their 2019 Corvette ZR1 shop car, including a performance camshaft, an upgraded supercharge pulley, ported cylinder heads, upgraded lifters and pushrods, and a full aftermarket exhaust, among much more. With these upgrades, the company was able to boost the C7 Corvette ZR1 to an impressive 905 horsepower and 844 pound-feet of torque at the rear wheels. That’s on Shell 93 Octane pump gas, too.
To demonstrate the speed of the 1,000-horsepower upgrade package for the C7 Corvette ZR1, the guys at HPE lined their aforementioned shop car up alongside a stock Dodge Demon for a roll race and filmed the match-up for their YouTube channel. We assume the Demon in this video is running race gas, as HPE claims it’s making 840 horsepower and not the 808 horsepower a Demon makes on pump gas. That may explain why the Demon is able to put up such a strong performance against the much lighter and much more powerful Corvette. Although race gas or not, the Demon never fails to impress us with its performance – especially considering its size and shape.
Watch this American heavyweight matchup in the video embedded above and feel free to let us know what car you think HPE should race their 1,000-horsepower C7 Corvette ZR1 against next in the comments below.