The Mustang is nothing but a black blur and wall of supercharger wail as it buzzes by the camera at top speed. Despite the strong result, Hennessey doesn't seem done with the 'Stang yet. The car still seems to be pulling when it hits the rev limiter, and there's some straight track left ahead. After getting out, John Hennessey immediately says he thinks 200 mph is possible.
The heart of the HPE700 is a 2.9-liter Roots-Type supercharger running at 7.25 psi. That's a pretty massive blower, especially when considering the 2.4-liter unit on the Hellcat V8. The engine also gets upgrades like improved injectors, a new fuel pump, stainless steel exhaust and recalibrated management. The company claims the upgraded Mustang can hit 60 in around 3.6 seconds and do the quarter-mile in 11.2 seconds at 131 mph. Prices for the package start at $59,500, but this one would would ring up for $65,874. Hennessey Performance is limiting production to 500 of them for the 2015 model year.
John Hennessey takes his personal Mustang GT on a Texas road trip
Uvalde, Texas-Everything is bigger in Texas, especially when it comes to automotive performance. Texas also lays claim to the highest posted speed limit in America at 85 mph. Enter the team from Hennessey Performance Engineering (HPE) who are located just west of Houston. John Hennessey and his merry band of performance car builders like to go fast, so much so that they have their own ¼ mile dragstrip next to their workshop.
Recently, the Hennessey team wanted to test their 717 horsepower HPE700 Supercharged Mustang development car (John's personal car and occasional daily driver) beyond the 130+ mph speeds that they have seen on the dragstrip. "Thankfully, we had recently received an invitation from the guys at the Continental Tires proving grounds in Uvalde to come over and do some testing on their 8.0 mile high speed oval", said Hennessey. "So we rounded up a team of our technicians and engineers and made a quick road trip to Uvalde to see how our HPE700 would perform at higher speeds".
John and his son, JP, drove the HPE700 Mustang from the company's Sealy headquarters to Uvalde – a distance of 240 miles. After spending the night, the team arrived at the proving grounds early the next morning. After waiting for several hours for the morning dew to burn off the track, the team prepped the car to go out and take a few laps around the large oval. "It's almost like a big circle with two short 1.1 mile long straightaways", said John.
After completing a warm up lap Hennessey decided to open up the HPE700's supercharged 5.0L Coyote V8 engine and see how the car felt at higher speeds. "Cruising through the final turn I was trying to maintain 120-130 mph while building some speed as I neared the straight", said Hennessey. When I hit the straight, I wanted to be around 140 mph and then let all of the Mustang's horsepower run wide open. The car pulled very strong and just kept pulling. I hit a pretty nasty bump around 170 mph and kept my foot on the gas. Then I hit the rev limiter at just over 195 mph according to the Racelogic VBox display".
After returning to the pits, Racelogic engineer, Joe Lachovsky was able to confirm that the 2015 HPE700 Supercharged Mustang had recorded a top speed of 195.2 mph as validated by the VBox 3i GPS-based data logging system.
"I'm very happy with this first test of our specially tuned Ford Mustang GT", said Hennessey. The aerodynamic stability of the stock bodied car gave it a balanced and predictable feel at speed. We are also very happy to have the ability to demonstrate the daily driveability of our HPE700 along with the durability. Our supercharged 5.0 V8 ran flawlessly at high rpm and high speeds while oil temps were never an issue, thanks to our Pennzoil PurePlus synthetic. We drove it to Continental, ran 195+ mph and drove it home – a round trip distance of over 500 miles".
2015 HPE700 Supercharged Mustang GT as Tested Specifications
2015 Ford Mustang GT, 6-speed manual transmission with optional Track Pack
• 717 bhp @ 7,000 rpm
• 632 lb-ft torque @ 4,400 rpm
• 0-60 mph: 3.6 sec.
• ¼ mile: 11.2 @ 131 mph
• Top Speed: 195.2 mph (with optional 3.15 rear axle ratio)
HPE700 Supercharged 5.0L V8 Engine Upgrade
• 2.9 Liter Supercharger System
• Upgraded Fuel Injectors
• All Necessary Gaskets & Fluids
• Professional Installation
• HPE Engine Management Calibration
• Dyno Tuning & Road Testing
• Hennessey Exterior Badging
• HPE700 Exterior Badging
• Supercharged Exterior Badging
• Hennessey Premium Floormats
• Hennessey Embroidered Headrests
• Serial-Numbered Dash & Engine Plaques
• 3 Year / 36,000 Mile Limited Warranty
• Lowed suspension
• 3.15 rear axle ratio
Total price as tested
Just 500 units of the HPE700 will be produced for the 2015 Mustang model year and over 50 orders have already been confirmed. Pricing starts at $59,500 USD including the base 2015 5.0L Mustang GT. New 2015 Hennessey Mustangs can be ordered through local Ford dealers including AutoNation's 37 stores across America.