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

Topics
Lou Ruggieri
A lifelong lover of cars, Lou contributes to Motor Trend, Hot Cars, Auto & Truck Connection, and the PowerAutoMedia Group.
Mercedes-Benz Wallbox smart home charger now available nationwide for fast EV charging
Save time and hassle by charging your EV at home
Mercedes-Benz Wallbox home EV charger in a garage behind a car with its taillights on.

If you drive a Mercedes-Benz EV or Plug-in Hybrid, the Mercedes-Benz Wallbox is now available throughout the United States. It offers a convenient home charging solution. The Wallbox significantly benefits drivers who recharge their electric or plug-in hybrid vehicles overnight. This is particularly useful given that the charging speed can vary based on the vehicle's battery size and current charge level. Also, the Wallbox's design complements the aesthetic of Mercedes-Benz electric vehicles.
Why the Mercedes-Benz Wallbox is important

Like most other automakers, Mercedes-Benz is making huge investments in battery electric vehicles (BEVs). Convenient charging is a key element in supporting consumer transition to BEVs, and charging at home is the most convenient way to make that happen. Mercedes-Benz has joined other automakers in adopting the North American Charging Standard (NACS) so customers can connect to Tesla's Supercharger network away from home, but fast charging at home with a Level 2  240V charging box will charge an EV's better up to eight times faster than plugging a Level 1 charger into a standard home outlet.
Using the Wallbox app

Read more
10 years on, Hennessey aims to reclaim its fastest car title
Can Hennessey dethrone Bugatti again?
Hennessey Venom F5

A Hennessey Venom F5 may blast through the 300 mph barrier and take the title of world’s fastest production car a decade after its predecessor, the Venom GT, snatched the crown from Bugatti. The Texas-based hypercar manufacturer will once again have to dethrone a Bugatti, as the current record of 304 mph was set by a Bugatti Chiron Super Sport 300+.

The Venom F5 is a “bespoke” carbon fiber chassised masterpiece with a hefty 1,187bhp twin-turbocharged V8 ‘Fury’ engine propelling that lightweight frame along. If simulations are correct, it should be able to break the record and then some. But you don’t set records virtually; it’s all about what happens on the track.

Read more
Poor Tesla: The Cybertruck was just outdone by a Subaru Crosstrek
The Tesla Cybertruck lacks basic off-roading features
Tesla Cybertruck driving in the desert.

Despite its launch showing it is dominating vehicles like the Porsche 911 and the Ford F-350, the Tesla Cybertruck has just been outclassed on a trail by a Subaru Crosstrek. This isn’t the first time that the irregularly shaped EV has failed to deliver on its purported capabilities, but it is one of the first times that the Cybertruck has been overshadowed by a vehicle that costs around half its price.

In a recent YouTube video posted by VoyageATX, the stainless steel monstrosity struggled with inclines, terrain features, and even basic offroad functionality. Despite having the option to lock the rear differential in its menu, Tesla has yet to enable this feature. When the YouTuber attempted to lock his Cybertruck’s diff, he was instead met with an error message and a promise he would be able to perform the action at some point in the future. The same restrictions applied to front diff locking when that was attempted.

Read more