It was again in 1991 that John Hennessey received married and modified his every day driver, a Mitsubishi 3000GT VR4 so he may enter the Nevada Open Highway Problem (completed fourth) and the Pikes Peak Hill Climb, and make pace runs on the Bonneville Salt Flats (setting a category file 177 mph) and the Silver State Problem (general winner, once more averaging 177 for the 90-mile distance).

Even with all that, Hennessey and his newlywed, Hope, discovered time that yr to begin a brand new enterprise (he had been within the environmental remediation enterprise), and 30 years later, Hennessey Efficiency of Sealy, Texas, has produced greater than 10,000 high-performance automobiles for purchasers.

As a part of its thirtieth anniversary celebration, Hennessey Efficiency shared its “prime 10 automobiles of all time:”
1991 Mitsubishi 3000GT VR4, entered Pikes Peak, two open-road races in Nevada and set class file at Bonneville
“Fly Navy” Venom 1000 Twin Turbo, based mostly on 2005 Dodge Viper, received Highway & Observe supercar shootout that included a Bugatti Veyron.
VR1200, based mostly on 2012 Cadillac CTS-V, ran 221 mph on Texas Toll Highway.
HPE600 Corvette C7, 2013 mannequin was first Corvette C7 to exceed 200 mph.
Hennessey Venom GT, 2010 Hennessey-built supercar that set Guinness World Report of 270.49 mph and reigned as world’s quickest manufacturing automotive from 2014-2017.
VelociRaptor 600, based mostly on 2012 Ford Raptor pickup truck, however with 600 horsepower and able to a 0-60 mph dash in 4.2 seconds
The Exorcist, based mostly on 2017 Chevrolet Camaro ZL1 however with 1,000 horsepower and 883 pound-feet of torque, 0-60 in 2.1 seconds, prime pace of 217 mph
VelociRaptor 6×6, 2017 intro of a $350,000, 6-wheel, 600-horsepower pickup truck
Hennessey Heritage Version Mustang, 2018 intro, based mostly on Ford Mustang GT350R however with 808 horsepower
Hennessey Venom F5, to be launched in 2021 with 1,817 horsepower V8 and able to 311 mph, 0-to-186 mph in 8.4 seconds

On the finish of 1991, trying again at that yr of motorsport, I spotted I’d discovered the primary rule of auto racing – if you wish to make a small fortune in racing, begin with a bigger one!” Hennessey stated in his firm’s anniversary information launch.

“To proceed my ardour, I knew I’d must discover a strategy to pay for it. So, I believed, if Carroll Shelby and Alois Ruf may make a residing by constructing and modifying automobiles then possibly I may, too – that’s how our firm started.”

At first, figuring out of a rented storage with one different worker, Hennessey modified turbochargers and consumption and exhaust programs for the 3000 GT, its cousin, the Dodge Stealth, and the Toyota Supra and Mazda RX-7.

Two years later, he created the 500-horsepower Dodge Viper Venom 550 for a buyer and likewise produced an aftermarket hardtop for Dodge’s unique V10-powered roadster. Hennessey helped discovered the Viper Membership of America, and his store rolled out the Venom 600, after which the 650, which in 1997 posted a prime pace of 203 mph.

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By the flip of the century, the Venom 800 and 1000 fashions have been prepared, the store employees grew to five staff, and the Hennesseys had 5 youngsters, at which level John Hennessey retired from racing.

However whereas he left racing, he didn’t go away race tracks and in 2004 purchased the Lonestar Motorsports advanced, a drag strip with return roads that he become a take a look at observe with a 30,000-square-foot manufacturing facility (staffed in 2021 by 50 staff and by college students on the Hennessey Tuner Faculty). 

A Venom 800 received a 16-car supercar problem staged by Automotive and Driver journal, a Hennessey-tweaked Ford GT hit 234 mph, and in 2009 improvement was underneath method on the purpose-built Hennessey Venom GT, which a Chevrolet LS9 V8 would propel to greater than 270 mph.

In 2012, Hennessey headlines continued with the Texas Toll Highway SH130 being christened with the Hennessey Cadillac VR1200 hitting 221 mph and the Hennessey Camaro ZL1 working 204.

At The Quail, A Motorsports Gathering in 2018, Hennessey unveiled his personal 1,600-horsepower F5 engine, which was designed for a brand new Venom supercar scheduled to launch throughout 2021.

Hennessey has shared an hour-long anniversary video podcast:

Larry Edsall

A former every day newspaper sports activities editor, Larry Edsall spent a dozen years as an editor at AutoWeek journal earlier than making the transition to writing for the online and turning into the writer of greater than 15 automotive books. Along with being founding editor at, Larry has written for The New York Occasions and The Detroit Information and was an adjunct honors professor on the Walter Cronkite Faculty of Journalism and Mass Communication at Arizona State College.

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