The World of West Chevrolet

Monday, April 29, 2019

Hotcars.com Details Chevy Corvette ZR1 Upgrade From Hennessey Flaunting 1,200 Horsepower



The article featured this week from Hotcars.com about the new upgrade for the Corvette ZR1 from Hennessey begins with the short list of cars that have 1,200 horsepower. The world's fastest is the Koenigsegg Agera RS, which boasts a startling 1,341 hp when running on race-grade fuel. Then there's also the Bugatti Veyron Grand Sport Vitesse, the world's fastest car previously with its 1,200 horsepower and 1,100 lb-ft of torque. Hennessey even has their very own Venom GT, touting bragging rights to 1,244 horsepower, and what many in our circles here at West Chevy and beyond regard unofficially as the fastest-accelerating car on Earth.

Any Chevy fan should be absolutely thinking twice at the possibility of picking up something this fast at their local Chevy dealer for just a fraction of the price, and with the Hennessey 1,200 horsepower upgrade package for the C7-Generation ZR1, it's possible. This means of making a Corvette a hypercar is cause to celebrate: any chance at all of getting to 1,200 horses is a longshot in the beginning during the drawing board stage, and the list of duties to achieve success was long.

Hennessey had to take on upgrading the supercharger, acquiring an entirely new throttle body, upgrade both lower and upper pulleys, make a custom camshaft, port the cylinder's heads, upgrade valves, springs, and retainers, as well as get stronger pushrods to appropriately take on all that power. Midpipes, stainless steel headers, and a brand new catalytic converter are also all part of the package. Very detailed dyno and testing, a strengthened 8-speed transmission, and ECU upgrades are also part of this very high-achieving tweak, and most professionals are assuming that E85 fuel is what's needed, since 93 octane seems to top out at 1,100 hp. Unique Hennessey badging, serialized plaques and floor mats are all included as well, on top of a 3-year, 36,000-mile warranty.


You can check out all of the fine details here on the official Hennessey website, where there are also some amazing pictures of the ZR1 in performance mode at dusk. If you happen to have the 7-speed manual, the transmission does not require an upgrade, and you'll be flying forward with glee in no time flat. The staff of Car and Driver took the 2019 Corvette ZR1 for a spin at the Texas Mile and went 183.3 mph, and still loved how the car possesses enough daily-driver traits to make it sensible on any street. They ran the Mill with traction and stability control on, but still metered the throttle before second gear.

Just three years ago when the Z-6 hit the road, 650 horsepower was plenty, but as every year brings new challenges and adventures, this exciting revelation from the Hennessey team should literally be a “mover of mountains” and a tremendously track-tuned great ball of fire!

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