VIDEO: World’s Most Powerful SRT Demon 170

Hennessy Performance just went complete ape sh!t with this Dodge Challenger SRT Demon 170 build! Pushing 1700hp at the crank, this may be the baddest Challenger on the planet. Follow along as the Hennessy team breaks down the details on this crazy build. Make sure to head over to their YouTube page below and subscribe to stay up to date on their latest videos. Be sure to share your thoughts and comments below.

SOURCE: Hennessey Performance

“Introducing the Hennessey Demon 1700 Twin Turbo—one of the most extreme American muscle builds ever created. Limited to just 12 units worldwide, this no-compromise package transforms the already formidable Dodge platform into a 1,700 horsepower, 1,400 lb-ft torque machine engineered to dominate both street and strip. At the heart of the build is a fully reworked 7.2L (440ci) Gen III HEMI V8, now paired with a twin turbo system featuring Precision PT6870 turbochargers. Supporting upgrades include a high-flow stainless exhaust, upgraded fuel injectors, billet turbo wastegates and blow-off valves, and a fully integrated turbo oil feed and drain system. Extensive heat management solutions, custom charge piping, and a twin-intercooled billet intake system ensure consistent, repeatable performance under extreme load. Power is transferred through a fortified drivetrain featuring a Stage 3 transmission, billet torque converter, upgraded driveshaft, and a 3.09 ratio rear differential, all engineered to handle the massive increase in output. Additional chassis enhancements include billet control arms (front and rear), optimized driveshaft and axle geometry, and reinforced mounting systems to maintain stability and control under full boost. On the dyno, the Demon 1700 delivered an astonishing 1,355 rear-wheel horsepower and 1,202 lb-ft of torque in max boost mode at 23 psi—real-world numbers that validate the engineering behind the build. Every component is purpose-built, from PTFE-lined fuel systems to custom V-band turbo connections, ensuring durability, precision, and peak performance. This isn’t just an upgrade, it’s a complete transformation. The Hennessey Demon 1700 represents the outer edge of what’s possible with modern American muscle, built for those who demand absolute power with zero compromise.”

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