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Venom GT Spyder 1451bhp prend le titre de World’s Fastest Convertible Car avec 427,4 km/h

La Venom GT Spyder prend le titre de voiture topless la plus rapide du monde avec 427,4 km/h. En fait ce record célèbre les 25 ans de Hennessey Performance Engineering, créée en 1991 par le pilote John Hennessey et préparateur automobile. Récemment, Hennessey a bossé sur de la Mustang Convertible, ou VelociRaptor, ou encore du Ford F-150 Truck.

Have a great Spring Break! #hennessey #americanhorsepower #redwhiteblue

Une photo publiée par Hennessey Performance (@hennesseyperformance) le

Design de Venom GT Spyder

La Hennessey Venom GT est une voiture de sport basée sur le châssis et la carrosserie rallongés de la Lotus Exige, œuvre du préparateur américain Hennessey Performance Engineering.

Hennessey Venom GT convertible - 2016 - front / avant

Hennessey Venom GT convertible – 2016 – front / avant

Hennessey a construit une version décapotable de sa redoutable Venom GT, qui en février 2014, avait atteint 435,31 km/h. Alors, le défi pour ce type de véhicule c’est qu’en l’absence de toit, l’auto perd en rigidité. Le châssis du cabriolet est alors renforcé prends du poids. Mais le team Hennessey a trouvé la parade en mettant plus de chevaux de puissance pour un ratio 1244 kg pour 1471 chevaux.

Hennessey Venom GT convertible - 2016 - front side-face / profil avant - World Record

Hennessey Venom GT convertible – 2016 – front side-face / profil avant – World Record

Hennessey Venom GT convertible - 2016 - rear side-face / profil arrière

Hennessey Venom GT convertible – 2016 – rear side-face / profil arrière

Sticky Michelin Pilot Sport Cup 2 tires will put the Venom’s power to the ground via GPS-based traction control system. Combined with a curb weight of just 2743 lbs (1244 kg) the Venom GT continues to offer an unmatched power to weight ratio.

Hennessey Venom GT convertible - 2016 - rear / arrière

Hennessey Venom GT convertible – 2016 – rear / arrière

Moteur de Venom GT Spyder

General Motors - Chevrolet LS7 V8 7.0L - engine / moteur

General Motors – Chevrolet LS7 V8 7.0L – engine / moteur

Propulsée par le V8 de 7 litres (LS7) de la Corvette Z06, doté de deux turbos et d’une boîte 6-rapports Ricardo plc, la Venom GT peut développer 1471 ch ou 1451bhp.

L’unité de contrôle moteur (Engine control unit ou ECU) a été remaniée. La pression des deux turbos passe de 19 à 26 psi (unité de mesure de contrainte et de pression pour pound-force per square inch, que l’on peut traduire par livre-force par pouce carré). Résultat en français ? Une pression de turbo accrue de 1,3 à 1,8 bars pour le V8 7.0 biturbo V8, juste ce qu’il faut pour faire grimper la puissance de 210 chevaux. On parle d’un total de 1471 ch.

Hennessey Venom GT convertible - 2016 - engine / moteur

Hennessey Venom GT convertible – 2016 – engine / moteur

Ces évolutions ont permis au V8 de gagner plus de 200 ch. La puissance maximale atteint désormais 1471 ch soit l’équivalent de la puissance du bloc moteur W16 8.0L quadriturbo de la Chiron qui revendique 1500 ch.

Le V8 7.0L bi-turbo emprunté à la Corvette Z06, passe ainsi de 1261 à 1471 chevaux et donne au pilote l’occasion d’atteindre les 400 km/h en 18,1 sec.

Who's got the most powerful super sports car? @bugatti Chiron? @koenigseggautomotive Regera?

Une vidéo publiée par Hennessey Performance (@hennesseyperformance) le


Record de Venom GT Spyder

World’s Fastest Convertible: 265.6 mph Venom GT Spyder


On March 25, 2016 the Hennessey Venom GT Spyder has set a new world record for open-top sports cars at Naval Air Station Lemoore where Racelogic, the renowned independent speed testing firm, has officially confirmed that a top speed of 265.6 mph (427.3 km/h) was achieved. The record run was certified by Racelogic technical director, Jim Lau, and witnessed by US Navy Commander Darren Fouts, Air Operations Officer. The Venom GT roadster was driven by Brian Smith.


English summary

Sealy, Texas—The world’s fastest convertible is officially from Texas. On March 25, 2016 the Hennessey Venom GT Spyder has set a new world record for open-top sports cars at Naval Air Station Lemoore where Racelogic, the renowned independent speed testing firm, has officially confirmed that a top speed of 265.6 mph was achieved. The record run was certified by Racelogic technical director, Jim Lau, and witnessed by Commander Darren Fouts, Air Operations Officer. The Venom GT roadster was driven by Brian Smith, director of the Ford Performance Racing School.

Hennessey Venom GT convertible - 2016 - front / avant - World Record

Hennessey Venom GT convertible – 2016 – front / avant – World Record

Following the spectacular record-breaking speed of the Hennessey Venom GT in 2014, during which the hardtop coupe achieved a top speed of 270.4 mph (435.3 km/h) at the Kennedy Space Center, a record speed that remains unparalleled to this day, Hennessey has added yet another milestone. The open top version, the Venom GT Spyder, now also officially holds the world record. The open-top super sports car reached a maximum speed of 265.6 mph (427.4 km/h) at the US Navy’s 2.9 mile long runway in Lemoore, California, making it the fastest convertible sports car in the world – beating the previous record held by the Bugatti Veyron Super Sport Vitesse by over 11 mph.

Hennessey Venom GT convertible - 2016 - interior / intérieur

Hennessey Venom GT convertible – 2016 – interior / intérieur

“2016 marks the 25th anniversary of Hennessey Performance. I thought that this would be a special way to celebrate 25 years of making fast cars faster. I’ve wanted to test the top speed of our Venom GT Spyder, without the roof, ever since our coupe ran 270.4 mph on the Space Shuttle landing runway at NASA’s Kennedy Space Center in 2014. This was a great way to validate the technical excellence of our car which includes high-speed stability with an open roof.”

“We are grateful to have the help of so many friends, family, employees, customers and partners over the past 25 years. We look forward to the next chapter of the Venom with the F5 as we keep making fast cars faster for the next 25 years”
– John Hennessey, founder and president Hennessey Performance Engineering

The Venom GT is powered by a twin-turbo 7.0L V8 engine producing 1,451 bhp @ 7,200 rpm and 1,287 lb-ft of torque @ 4,200 rpm and puts its power down to the rear Michelin Pilot Super Sport tires via a 6-speed manual gearbox by Ricardo. The Venom GT is capable of 0-60 mph in less than 2.4 seconds and has been tested from 0-200 mph in less than 13 seconds.

Leading the pack will be Hennessey’s flagship hypercar, the Venom GT now boasting a maximum power output of 1451 bhp @ 7200 rpm, a gain of 207 bhp over the previous generation Venom which clocked a top speed of 270.4 mph at NASA’s Kennedy Space Center in Florida in 2014. Horsepower and torque are increased thanks to having the ability to run E85 Flexfuel which allows its 7.0L twin turbo V-8 engine to increase boost pressure from 19 psi to 26 psi.

“Being the fastest matters. We are intent on keeping the Venom as the fastest, best performing and most exciting hypercar on the road. We only plan to produce a handful of Venom GT’s in 2016 as we are also preparing for our next evolution, the Venom F5. We plan to demonstrate our improved power and performance both in terms of straight line acceleration as well as road course handling and lap time performance”.” – John Hennessey, founder and president Hennessey Performance Engineering


MAJ 10/05/2016

Venom GT Spyder: The back story.


Venom GT Spyder: The back story of the world’s fastest open top road car. On Saturday, March 26 the Hennessey Venom GT became the fastest open top sports car by running 265.6 mph. But was it easy? Check out the back story of man and machine and what it took for the Hennessey team to improvise, adapt and overcome in order to achieve their goal of making the Venom GT Spyder the fastest open top car in the world.


Source et images :
Hennessey Performance Engineering


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