The production version of the Mustang is hardly a slacker, providing a more than ample 450 hp. But that wasn’t enough for Hennessey, who added a supercharger to send highly-compressed air into the combustion chamber and add 267 hp to the already powerful V8 engine’s output.
The HPE700 makes a tire-smoking 632 pound-feet of torque at 4400 rpm, which translates to a 11.2-second quarter mile and a zero-to-60 time of 3.6 seconds. Those are very, very impressive numbers, and they match up with the HPE’s obvious competitor, the 707-horsepower Dodge Challenger SRT Hellcat. For the most powerful production car ever made by an American automaker, Dodge engineers cranked a 470-hp Challenger up by 237 hp with, yes, a supercharger. The Hellcat, like Hennessey’s Mustang, also benefited from a slew of strengthened components to make sure it could handle the extra power. The exhaust system, fuel pump, and fuel injects have all been upgraded.
The best part is the base price: A very affordable $59,500, including the cost of the base Mustang. That makes it a touch cheaper than the $59,995 Hellcat. The Cat will be easier to track down, however: Dodge told Autoblog it has no plans to limit production, while Hennessey will build only 500 units of the Mustang, including convertible variants.