How do you make a Dodge Challenger SRT Hellcat even better? Why, you give it more power, of course.
Hennessey's formula for vehicle improvement has always been the same: give it more power than the chassis can effectively deal with. The Dodge Challenger Hellcat was always a car that was on the ragged edge of how much power it can effectively use, courtesy of a 6.2-L supercharged HEMI V8 with 707 hp. Hennessey's HPE1000 upgrade package boosts that to 1,000 hp, making it just this side of ridiculous.
Getting to that much power starts with a larger supercharger, upping the displacement to 4.5-L and producing 14 psi of boost. Then various engine components are upgraded, including a larger throttle body, stainless steel long tube headers, high-flow catalytic converts, new high-flow fuel injectors, and a high-flow supercharger bypass valve.
After all that, the Hellcat HPE1000 now makes 1,012 hp at 6,500 rpm and 969 lb-ft of torque at 4,200 rpm. Zero to sixty takes just 2.8 seconds, with quarter-mile times now measuring in the 9-second range.
However, those times are only possible on a prepared track with an experienced driver. With 1,000 horsepower and no upgrades to the car's tires or suspension, most drivers are far more likely to just spin their wheels for several seconds rather than go anywhere.
Dodge makes a widebody version of the Hellcat with larger tires that might make this problem slightly more manageable, but a thousand horsepower is a lot for any tire to endure.
As you can see in Hennessey’s validation testing video, professional drivers ensure everything works through extensive on-road testing. Hennessey provides a 1-year /12,000-mile warranty along with professional installation and a number of serialized plaques to let you know where you stand in line.
This particular car is lucky number 13. We’re sure the driver doesn’t mind considering the unique and amazing roar of the V8 engine and whine of the 4.5-L supercharger.