850-HP Jeep Grand Cherokee Trackhawk Is A New Hennessey Beast CarBuzz News Features New Cars Used Cars Sell My Car Shopping Tools Car Reviews Car Finder Compare Cars Best Cars Car Dealerships Used Car Reviews Car Advice Home News 850-HP Jeep Grand Cherokee Trackhawk Is A New Hennessey Beast

850-HP Jeep Grand Cherokee Trackhawk Is A New Hennessey Beast

Apr. 14, 2018 11:31 AM ET by Martin Bigg Tuning / 8 Comments How long will it take until the tuner makes a 1,000-hp version? The Jeep Grand Cherokee Trackhawk is one of the most extreme SUVs ever made, thanks to its 6.2-liter supercharged Hellcat V8 engine that produces a monstrous 707 horsepower and 645 lb-ft of torque. Most owners would probably agree that having that amount of power in an SUV is excessive. Hennessey, however, disagrees, and is now offering a HPE850 Upgrade package for the high-performance SUV. As the name implies, the upgrade adds an additional 145 ponies, bringing the total output up to 852 horsepower and 845 lb-ft of torque. To achieve this, the tuning company has upgraded the SUV's software, attached a high-flow air induction system, and increased boost to 14 psi via a lower pulley upgrade. As usual, Hennessey hooked up the upgraded SUV to a dyno to back up its claims. Surprisingly, the tuner opted to switch the Grand Cherokee Trackhawk to rear-wheel drive during the dyno test. Hennessey Performance Nevertheless, factoring a 20 percent drivetrain loss the souped-up SUV sent 722 hp and 655 lb-ft of torque to the wheels while running on Shell V-Power 93 octane pump fuel. That translates to a total of 866 hp and 786 lb-ft of torque at the crank, but it's possible the result could have been different with AWD enabled. Compared to the stock Hellcat-powered 2018 Jeep Trackhawk, the Hennessey Jeep makes 135-wheel hp and 89 wheel torque over stock. If the HPE850 upgrade package still isn't enough for you, it probably won't be long until Hennessey ups the ante and offers a HPE1000 version with over 1,000 hp on tap. Watch this space. Hennessey Performance Hennessey Performance

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