Skip to main content

Hennessey supercharges the C8 Corvette Stingray: Fast just got faster

The new 700 hp Hennessey H700 C8 Corvette rips

Hennessey H700 C8 Corvette Convertible
Hennessey H700 C8 Corvette Convertible rear 3/4 view Hennessey / Hennessey

For most people, when the mid-engine eight-generation Corvette debuted in 2020, it was fast enough. Four years later, it continues in its ‘garden variety’ base form, using a naturally aspirated, mid-mounted 6.2-liter LT2 V-8 that makes an impressive 490 horsepower and 465 pound-feet of torque.

But, as enthusiasts of most fast cars often tend to do, they wanted more. GM, the gracious carmaker that it is, obliged by bringing the world a new generation of its legendary Corvette Z06. In C8 form, the Z used a smaller 5.5-liter flat-plane crank V-8 that allowed the SuperVette to rev to a ridiculous 8,600 rpm and, along the way, pump out an incredible 670 horsepower and 460 pound-feet of torque.

That really should be enough, right? Nope. We wanted more, and now Hennessey has brought us a wonderful gift in the form of the incredible H700 Corvette C8 Convertible, and it is nothing short of insane.

Hennessey H700 C8 Corvette Convertible
Hennessey H700 C8 Corvette Convertible side view Hennessey / Hennessey

Hennessey’s 700 hp supercharged supercar

Unlike the naturally aspirated, high-revving Z06, Hennessey decided to use the tried-and-true old-school method of getting massive power from a small block V-8 with a belt-driven supercharger explicitly designed for the C8 Convertible’s compact engine bay. That blower, along with a dedicated air-to-water intercooler, upgraded cat-back exhaust, and a “performance engine tune,” helps the car’s computer make the most of its newfound power, which peaks at a lofty 708 horsepower and 638 pound-feet of torque.

Compared to the base engine, Hennessey’s H700 increases horsepower by 44 percent and torque by 37 percent over stock. While the 38 hp advantage over the Z06 may not seem like much, the increase of 178 pound-feet of torque will certainly become readily apparent by the NHRA-level of thrust shoving you back in your seat at takeoff.

Hennessey H700 C8 Corvette Convertible
Hennessey H700 C8 Corvette Convertible wheels Hennessey / Hennessey

The Hennessey H700 comes with a 3-year/36,000 mile warranty

Aside from just the supercharger, Hennessey’s engineers also recalibrated the transmission to make the most of the massive tire-shredding torque on tap. Beyond the included cat-back exhaust, Hennessey also offers an active-valve exhaust to allow the H700 to be a bit more docile-sounding when required and more vivacious when desired.

Optional forged 19-inch alloy wheels make for another fun upgrade, or the even more striking Lightweight Street Wheels are available in gloss black, matte gunmetal, or satin silver. Less eye-catching but arguably even more attractive is the fact that the H700 is available as an upgrade to all 2020-2024 C8 Corvette HTC (hardtop convertible) models, and it even comes with its own three-year, 36,000-mile warranty.

As the next level of speed available for the timeless Corvette, it seems inevitable that eventually, there may be a demand for even more obscene levels of power than the H700. But, as Hennessey’s latest supercar is (currently) only available for the convertible variant of the C8, we have a sneaking suspicion that after feeling what 200 mph feels like through your hair, even the most diehard speedfreak will be satiated for quite some time.

Editors' Recommendations

Lou Ruggieri
A lifelong lover of cars, Lou contributes to Motor Trend, Hot Cars, Auto & Truck Connection, and the PowerAutoMedia Group.
Westfalia just dropped a new camper — its first in over 20 years — that is perfect for van life
One of the world's most iconic van customizers, maker of the OG "van life" van, returns to the U.S.
Young couple stepping into mountain stream with Westfalia Wave van in the background.

Van life living might seem like a "new" thing. But there were self-professed "dirtbags" and road-tripping hippies long before Instagram was ever a thing. Way back in the 1950s — we're talking before Buzz and Neil even set foot on the moon — Westfalia was turning Volkswagen buses into pop-top RVs so our parents' parents could road trip in (relative) style. Now, after a two-decade absence, the company is returning stateside with an all-new custom ride that's swankier, roomier, and more luxurious than any Westfalia van before it.

The inside scoop on the all-new Westfalia Wave camper van
While Westfalia made a name for itself by customizing VW buses in the 1950s, its latest project takes a surprisingly different tack. The Wave is based on the tried-and-true Ram Promaster 3500S platform with a 3.6L V6, pushing 276 horsepower through a nine-speed automatic transmission. Westfalia makes good use of the van's 20.7-foot bumper-to-bumper length, allowing for tons of space for sleeping, cooking, storage, and even showering.

Read more
The 8 best hybrid cars we’re most excited for in 2024
Looking for the best hybrid cars for 2024? Here's our list
2024 Toyota Tacoma i-Force Max hybrid pickup parked on a hill with mountains and desert in the background

Are you stuck deciding whether to spring for an all-electric car or to stick with the familiar and buy a new gas-powered vehicle? Or have you already decided to have it both ways and buy a new car, truck, or SUV with a hybrid power supply so you can avoid battery range anxiety, save on fuel, and do your bit for the environment? In either case, there are many excellent choices among new hybrid vehicles as some brands cease making gas-only vehicles.

To select the eight 2024 hybrid cars below, we considered several factors. We studied manufacturer history and success with hybrids, buyer satisfaction with earlier models, quality and value among comparable vehicles, and even the hybrids' fun factors.

Read more
New Audi Q8 e-tron edition Dakar is a stylish, off-road-ready luxury EV SUV
Audi has a desert-racing-inspired EV SUV that won't scare your neighbor's dog
2024 Audi Q8 e-tron edition Dakar driving on a desert road directly toward the viewer

Few racing fans will drive a million-dollar-plus trophy truck in the Dakar Rally desert race in Saudi Arabia. However, for drivers who aspire to take their daily driver on more moderate off-road adventures, the new Audi Q8 e-tron edition Dakar will let you scratch the desert-racing itch.

The Q8 e-tron edition Dakar was inspired by Audi's non-production RS Q e-tron in the image below and developed specifically to run in the Dakar Rally.

Read more