Hennessey Hennessey Demon 1700 Twin Turbo


Hennessey Performance is an American hypercar maker & tuning icon since 1991. Home of the Venom F5, specialized in making fast cars faster. Official: Hennessey

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Hennessey Plotting 1,700-HP Twin-Turbo Upgrade for Dodge Demon

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  • The Hennessey ‘Demon 1700 Twin-Turbo’ will have a target ¼ mile performance of 7.9s @ 175+ mph.
  • ‘Demon 1700 Twin-Turbo’ production will be limited to just 12 vehicles, with pricing starting at $200,000 — exclusive of donor Dodge Demon 170
  • Hennessey Performance Engineering (HPE) creates a new specialty in-house department, “Hennessey Special Operations” (HSO), to deliver ultra-exclusive, ultra-high-horsepower vehicles
Hennessey Performance Engineering (HPE), the Texas-based hypercar manufacturer and high-performance vehicle creator, has been making fast cars, trucks, and SUVs faster since 1991. Over the past 33 years, HPE has built a variety of ultra-powerful vehicles that have set numerous speed records in magazine shootouts and at ¼ mile, standing mile, and top speed events. With requests for Hennessey vehicles at an all-time high (over 1,100 vehicles have been delivered to clients worldwide since 2022), the company is focusing resources to meet the requirement.

Hennessey is announcing a new bespoke in-house department called “Hennessey Special Operations” (HSO) to build ultra-exclusive, ultra-high-horsepower vehicles for its most discerning customers. The HSO division will make only 15 to 20 vehicles per year, with potential customers applying via the unique Hennessey HSO website.

“Demand for our powerful vehicles over the past several years has been so strong that we had to shift from being a high-volume tuning company to more of a factory with assembly lines and all of the logistics that go with delivering over 500 vehicles per year,” said Founder & CEO, John Hennessey.

“The transition to becoming a manufacturer with a factory producing lots of vehicles meant that we had to shift some of our resources away from the high horsepower vehicles that have kept the Hennessey name in the automotive headlines for the past 33 years,” explains Hennessey. “We are happy to announce that we’ve created a new division within the company that allows us to build mega-powerful vehicles in small production runs. Taking my new Dodge Demon 170, removing the blower, adding a pair of turbos, and increasing power from 1,025 to 1,700 horsepower was exactly what we’ve been wanting to do.”

Hennessey’s ‘Demon 1700 Twin-Turbo’ is a comprehensive build with an all-new blueprinted motor and transmission (the factory-supercharged V8 from the Demon 170 will be shrink-wrapped and preserved for safekeeping). A pair of massive turbochargers provide boost, while a more robust powertrain ensures the maximum power goes to the pavement. Performance from the ‘Demon 1700 Twin Turbo’ will be astounding — burning E85 ethanol, the coupe will have a target ¼ mile time of 7.9 seconds @ 175 mph.

Production will be extremely limited – HSO will only build 12 ‘Demon 1700 Twin-Turbo’ models, each with a base price starting at about $200,000 (exclusive of donor Demon 170). Those interested in owning the world’s most potent and exclusive Demon, with unmatched muscle car performance, are encouraged to contact HSO at +1 979.885.1300 or visit Hennessey HSO.
 
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What happens when you take Dodge’s most extreme muscle car, the Demon 170, and make it even more outrageous? You get this: a twin-turbo beast with over 1,700 horsepower, built by Hennessey. In this video, we take you behind the scenes of the dynamometer test for the most powerful Demon 170 engine ever created.
 
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ALL DEMON 1700 UNITS HAVE BEEN RESERVED - SOLD OUT

Discover the Hennessey Demon 1700 Twin Turbo:
one of the most extreme American builds ever created. Limited to just 12 units worldwide, this uncompromising version transforms the already formidable Dodge platform into a 1,700-horsepower and 1,900 Nm of torque machine, designed to dominate both the road and the track.

Engineering & Performance

At the heart of this build is a fully reworked 7.2L (440 ci) Gen III HEMI V8, now paired with a twin-turbo system featuring Precision PT6870 turbochargers. Other upgrades include:
  • High-flow stainless steel exhaust.
  • Upgraded fuel injectors.
  • Billet aluminum blow-off valves and wastegates.
  • Fully integrated turbo oil feed and return system.
Advanced thermal management solutions, custom charge piping, and a dual-intercooler billet aluminum intake system ensure consistent, optimal performance, even under heavy load.

Drivetrain & Chassis

Power is delivered through a reinforced drivetrain featuring a Stage 3 transmission, a billet aluminum torque converter, an upgraded driveshaft, and a 3.09 rear differential ratio—all engineered to handle the massive increase in output. The chassis also benefits from significant enhancements, including billet aluminum suspension arms (front and rear), optimized driveshaft and axle geometry, and reinforced mounting systems to ensure stability and control at full boost.

Proven Results

On the dyno, the Demon 1700 delivered an impressive 1,355 rear-wheel horsepower and 1,628 Nm (1,202 lb-ft) of torque at a maximum boost of 1.6 bar (23 psi)—concrete figures that validate its engineering quality. Every component is purpose-built, from the PTFE-coated fuel systems to the custom V-band turbo fittings, ensuring durability, precision, and peak performance.

This is not just an upgrade; it is a true metamorphosis. The Hennessey Demon 1700 represents the limit of what is possible for modern American muscle cars, designed for those who demand absolute power without compromise.
 

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