Zac Quinn 
Texas-based Hennessey Performance Engineering has pulled the sheet on a super powerful muscle car that is sure to grab everybody’s attention at the drag strip and local car meets alike. It’s an 850 horsepower version of the new 2024 S650 Ford Mustang Dark Horse, featuring extra punch from a supercharger on top of its new Coyote V8 engine.
Hennessey Ford Mustang Dark Horse: Details
The high horsepower Ford Mustang Dark Horse has been dubbed the H850 and boasts a high-flow induction system, bigger fuel injectors, and an upgraded fuel pump. Tagging along with the supercharger is an HPE software upgrade, which helps boost the 5.0-liter Coyote V8 to 850 hp and 650 lb-ft of torque. That’s an increase of 70% over the stock 500 hp. But things get even better when it’s revealed that this upgrade is available on both the 10-speed automatic and the Tremec six-speed manual.
Hennessey didn’t stop there with the Ford Mustang H850 Dark Horse build, as it has also equipped the muscle car with a new splitter made of carbon fiber on the front bumper, along with new side skirts and a new rear wing, all made of the epic material. The vehicle rides on forged aluminum wheels, and if you want, Hennessey also offers unique ‘Heritage’ graphics as an available option. On the inside, the head restraints of the seats feature embroidery identifying the tuner. The company might be working on adding accessories to enhance the cabin further. However, since the Dark Horse has a remarkable design with Recaro seats and a titanium shift knob, there’s not much else that the trim needs to be any more epic on the inside.
Pricing for the Ford Mustang H850 Dark Horse has yet to be announced, but Hennessey is including a three-year / 36,000-mile limited warranty, as found on all of its tuned products. That should give plenty of peace of mind when adding 70% more power to the Coyote V8. Production is expected to begin next quarter. This package is even more remarkable because Ford has made the S650 difficult to safely tune, as GM has done with its vehicles. But, Hennessey has already cracked the code, even before Saleen, which has a very close relationship with Ford, could make its 800 hp S650 a reality. So, perhaps the ECM is easier to bypass than the Blue Oval would like us to believe or Hennessey was authorized to modify the car.
