VIDEO: 1,000+ Horsepower World Time Attack C6 is a Monster!

Take a peek at of one of the world’s fastest Corvettes, Feras Qartoumy’s 1,000+ horsepower World Time Attack C6!

Over the years, the C6 rightfully earned a reputation as an incredible platform for mods. Virtually everyone from grassroots amateurs to world-class endurance teams continue extracting more speed from the chassis, largely thanks to the diverse aftermarket support and balanced chassis. And if there’s one series which exemplifies this more than any other, it’s time attack.

For the uninitiated, time attack as a discipline works like this. You build a car to run around a circuit as fast as humanly possible, under very few restrictions. The overall goal being setting the absolute fastest flying lap. The World Time Attack Challenge (WTAC) takes place in Sydney, Australia, and represents one of the premiere bodies alongside Global Time Attack. Time attack became famous as a sort of proving ground, where virtually anyone with a competitive car can enter. So you have people who built their own car in their garage competing alongside professional racing teams – and winning. As is the case with Feras Qartoumy (pronounced car-toom-ee) and his C6 Corvette, largely modified with his own two hands. A car which holds no fewer than 28 track records, according to Qartoumy. Let’s take a deep dive at just how he did it.

Undiluted Speed

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We begin our journey at the exterior, which at first glance looks like a C6 with the characteristic wild aerodynamic elements bolted on. But let’s have a closer look at just how unique this car really is. The unique carbon-kevlar body, for example, came courtesy of HGK, who spied the car at Road Atlanta. They supplied Qartoumy with the bespoke body, originally meant as a lightweight drift car shell. Qartoumy’s modifications include making holes for the massive rear wing, as well as cutting up the front fenders for clearance to fit the turbos.

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The radiator’s actually mounted amidships, a massive 36-inch trophy-truck unit with dual brushless fans. Qartoumy claims the fans may also play a role in propelling expelled air over the top of the rear diffuser, further enhancing rear downforce. The entire rear tub’s actually removed, in its place simple sheet aluminum, all in the name of saving weight. Qartoumy himself designed the rear radiator scoop and built the rear tub last winter. The rest of the body (aside from the massive front wing) remained largely the same. Because it’s a drift body and was never meant to go at high speeds, the hood was actually so light that it lifted up by several inches on the back straight of Road Atlanta. A problem which was solved by the perennial lifesaving tool: duct tape.

Brute Force

The powertrain, however, is what really makes this beast what it is. Under the hood lurks a 430c.i. LSX, featuring a plethora of mods. Some of the standouts being the RHS block, twin Garrett G35-900 turbos, custom-ground Comp Cams camshaft profile, Hooker Blackheart manifolds, and Callies crank. With high boost settings, the car’s easily producing in excess of 1,000 horsepower. More like 1,200, being conservative. Although he normally runs it closer to 800 horsepower. A large majority of these parts originally started life intended for the drag strip. And considering the nature of time attack being a short, brute-force run, it makes a lot of sense. All this runs to the rear wheels through a PPG 6-speed sequential transmission, which is actually gear-limited to about 187 miles per hour.

What sets this car apart isn’t just the engine, but the power management and driving confidence. Remember, time attack’s essentially unrestricted, so driving assists are all perfectly legit. In his case, he’s running a MoTeC TCS and Bosch ABS system, along with GVW 45 wastegates to help temper the massive turbos. And those aerodynamic elements aren’t just for show. Qartoumy used CAD to develop the undertray, featuring advanced underbody aerodynamics to help minimize drag.

Balancing the mechanical grip from the suspension with the aerodynamics proves a continuing battle. According to an interview he conducted with High Performance Academy, getting the balance correct “Has been a chore… You can get all the aero that you want. But if the car, the suspension, everything’s not in harmony, it means nothing.” That said, he seems to be doing pretty well for himself. His Corvette blew the doors off the competition at Road Atlanta (results). And that’s no exaggeration; his final time stood at 5.1 seconds faster than second-place. And he took home another record for Pro-Am class at Sydney in September, becoming the fastest American car on-track there.

The Relentless Pursuit of Speed

Qartoumy’s Corvette remains uncontested as the fastest C6 around a circuit. Without the restrictions of class-based racing, the car essentially makes twice the power of a C6.R and has as much aero as an open-wheeler. According to Qartoumy, when asked about his run in Sydney: “Approaching a turn at 175 (miles per hour) and not getting on the brakes is so counterintuitive as a driver. I’ve been working at it to hold it more and more.” Bear in mind, it’s his first time running at Sydney. Setting a new record showcases just what an amazing build Qartoumy created, that he can dominate a field at an unfamiliar track.

Qartoumy aims to shave off over 2.5 seconds off his current record, citing how much potential development is left in the car. Not to mention the driver. As Qartoumy himself grows more comfortable with different circuits, lap times naturally come down regardless. Considering how fast he already is, we can’t wait to see what’s next for both Qartoumy and his C6.

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