The HPE800 is based on the Ford Mustang GT, and it was designed to celebrate Hennessey’s 25th birthday. The tuner started with the GT’s 5.0-liter V8 engine and fitted it with a 2.9-liter supercharger. Other mechanical modifications include a high-flow air intake made out of carbon fiber, a revised fuel-delivery system, strengthened gaskets, and a sport exhausts.
All told, the eight-cylinder delivers 804 horsepower at 7,000 rpm and 648 pound-feet of torque at 4,400 rpm when it’s sipping 93-octane gasoline. The HPE800 hits 60 mph from a stop in just 3.1 seconds, and it goes on to a track-worthy top speed of 207 mph. Power is routed to the rear wheels via either a six-speed manual transmission or a six-speed automatic unit. Surprisingly, both transmissions are fully stock.
Bigger brakes sourced from Brembo and a revised, lowered suspension setup keep the extra power in check.
Doubling the Mustang’s output wasn’t enough for Hennessey. Visually, the pony car stands out thanks to a body kit that includes a massive front splitter, side skirts, and a trunk-mounted spoiler. It rides on 20-inch wheels wrapped by Michelin Pilot Super Sport tires, and it features an array of commemorative stickers and decals that tell onlookers they’re not following a run-of-the-mill ‘Stang. Inside, every HPE800 features custom floor mats, embroidered headrests, and a plaque engraved with its serial number.
Hennessey will build just 25 examples of the HPE800 in the coming months. It’s available both as a coupe and a convertible. Pricing information hasn’t been announced yet, but every one comes with a certificate of authenticity from Hennessey and a three-year, 36,000-mile warranty.
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