Hennessey HPE700 2015 Mustang GT: Z06 Shakes In Fear

Hennessey Performance Engineering Unveils the HPE700 2015 Ford Mustang GT

Article by Anthony Alaniz (Anthony_Alaniz). Images from Hennessey Performance Engineering.

The Internet got into its collective circle jerk over the 2015 Ford Mustang when images, prices and specs were painstakingly and slowly released—and did so for many reasons. As great as the next-gen Mustang is expected to be, which is just now hitting dealership lots, it hasn’t stopped iconic tuners like Roush and Saleen from adding their dose of perspective on the new pony car.   

Now, Hennessey has hopped on the horsepowered-Mustang bandwagon by unveiling its monstrously sick HPE700 Supercharged upgrade for the Mustang GT, of which only 500 units will be built. 

Take. My. Money. Now. Dammit. 

Hennessey Performance Engineering Unveils the HPE700 2015 Ford Mustang GT Image 2

While the examples from Roush and Saleen are modest in both performance and styling, the Texan tuner has crafted a delightfully menacing fastback that looks like it’ll chew your face off and haunt your nightmares like Freddy Krueger.

Power is pumped up to 717 horsepower at 6,600 rpm with torque twisting in at 632 lb-ft at 4,400 rpm. Performance numbers from the company state a supercar-quick 3.6-second 0 to 60 mph time with a quarter-mile rocketing by in just 11.2 seconds at 131 mph—all on 93 octane fuel. 

That power comes from a roots-type, high-helix 2.9-liter supercharger system packing 7.25 psi of boost with an HPE air induction system, upgraded fuel injectors and pump, HPE engine management calibration, optional stainless-steel exhaust system and dyno tuning and road testing for good measure.

Of course, no tuned Mustang would be complete without letting you know it is far removed from its once stock and former self. Badges denoting Hennessey, HPE700 and Supercharged are all placarded on the exterior to tell the competition, back off, you’ll lose. 

Also available on the exterior is the optional CarbonAero package that includes a carbon-fiber front splitter, side sills, rear lip spoiler and rear diffuser. 

Hennessey Performance Engineering Unveils the HPE700 2015 Ford Mustang GT Image 3

"This thing is uncaged, absolutely nuts,” said Hennessey partner Don Goldman in a press release—and how right he is.

Price starts at $59,500 including the base GT. Extra personalization bits include the aforementioned CarbonAero package, 20-inch Hennessey H10 wheels wrapped in Michelin Pilot Super Sport 2 tires and Brembo brake package with 15.1-inch rotors. 

The sum of all those parts are respectable salvos across the bow of the Dodge Hellcat offerings and even the Corvette Z06

A high-performance upgrade for the 2.3-liter EcoBoost Mustang is also under development by the company according to the press release. Color us green with excitement. 


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Anthony Alaniz (Anthony_Alaniz)

Born and raised in southeast Michigan. Chose to stay out of necessity. Staff writer at a small community newspaper covering city government, the schools and whatever else happens in town. J-school graduate from EMU, weekend mechanic, car enthusiast and open-road connoisseur. Open to all invites of hospitality and adult beverages.
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unless the boyz at hennessey have dropped ~500lbs from the stock Rustang, this thing will only get close enough to the Z to see its tail lights.


There is about 210lbs weight difference (2015 Z06 = 3582lbs, GT = 3792lbs) between the two and 67hp more in the Hennessey GT (but a few lb-ft torque less). I'm thinking it might just be a close race than you think. Now if Hennessey did drop some weight, things might just get interesting in the twisties too.