John Hennessey tests his HPE850 Dodge Challenger Hellcat

Did you buy a Dodge Challenger SRT Hellcat? Good for you! That means you have an entertaining 707-horsepower mean machine parked in your driveway. A question though, if we may. Do you ever wish you had more horsepower on tap?As you might expect, Hennessey Performance has a power package for you.

The Challenger Hellcat HPE850 receives a fresh tune, new pulleys, and breathes a bit more easily. That alone is enough to see output rise to 852 horsepower and 845 pound-feet of torque. That power figure is quoted as being at the engine, and John Hennessey quotes 730-740-hp to the wheels.

The particular HPE850 in the video above also gets long-tube headers, exhaust cutouts, and a set of Nitto drag radials at the rear. This means it should hook up quite well and also be deliciously loud. With those electronic cutouts, however, you can also quell the noise should you tire of the car constantly shouting at you.

Of course, Hennessey has had this package for awhile. In this video, John Hennessey drives the HPE850 around his grounds and dragstrip and reviews the car for his potential customers. It’s a review of both his modifications and the stock Hellcat, which Hennessey describes as driving your living room couch with a jet engine. Hennessey also makes a few speed runs in the car, and a hard launch that works better at 3,000 rpm than it does at 3,500 rpm. That’s quite a bit higher than you can launch a stock Hellcat, and it’s thanks to the drag radials.

Hennessey has prepped plenty of bonkers builds. There’s a 1,032 twin-turbocharged Hellcat and Hennessey also promises that 1,500 horsepower will be available when it gets its hands on the Dodge Demon. Compared to those cars, the HPE850 seems downright reasonable.

Check Also

Teen builds own emergency truck, responds to distress calls

Many kids dream of joining the police force or becoming a firefighter, though most normally wait until adulthood before fulfilling it. That isn't the case for a 16-year-old from Melbourne, Australia. The youngster, whose identity cannot be revealed because of his age, converted a white Isuzu truck into his very own emergency vehicle, complete with...

Learn what it takes for a car to break the sound barrier

In 1997, the Thrust SSC team landed a world record when its car set the world land-speed record of 763 mph. But, taking a car like the Thrust SSC to speeds above 700 mph isn't a simple as holding the steering wheel straight and mashing the throttle. No, there's finesse and precision involved to break records, and subsequently, the sound barrier. Foremost...