Hennessey Demon 1700 Can Spin Its Tires At 100 MPH

The original Dodge Challenger Demon 170 was already completely ridiculous. Dodge built it as a factory drag-strip monster with 1,025 hp, skinny front tires, and the subtlety of a fireworks factory explosion. Naturally, Hennessey looked at it and decided it still needed another 700 horsepower.

The result is the Demon 1700, a twin-turbocharged monster that recently completed its final validation drive. According to Hennessey president Alex Roys, the car managed a rolling burnout at 100 mph during testing. That sounds absurd because it absolutely is. Spinning the tires from a standstill is one thing. Lighting them up while already traveling at highway speeds requires a truly unreasonable amount of power.

That power comes from a heavily reworked 7.2-liter HEMI V8 using twin Precision turbochargers instead of the factory supercharger setup. Roys claims the engine alone costs around $100,000, and judging by the noises coming from it, you can believe it. Gone is the Demon’s trademark supercharger scream. In its place is an angry mix of turbo spool, wastegate chatter, and blow-off valve theatrics that sounds more race car than muscle car.

The build itself comes from Hennessey Special Operations, the company’s low-volume division focused on extreme custom projects. Upgrades include a reinforced transmission, upgraded fuel system, billet torque converter, revised rear differential, and enough supporting hardware to make the whole thing barely controllable. Roys even admitted the car felt actively dangerous with the electronic assists disabled, saying, “It wants to kill me bad.”

Only 12 examples of the Demon 1700 will be built, each starting at $200,000 before you even supply the donor Demon 170. Hennessey originally targeted a 7.9-second quarter-mile at over 175 mph, though for now the company seems content showing off rolling burnouts and terrifying its own employees.