Here's How a 700-HP GT2 RS Stacks Up Against a 485-HP GT3 Cup Race Car on Track

The GT2 RS may be heavier, but it has a massive 215-horsepower advantage over the naturally aspirated cup car. Is it enough to trump the naturally aspirated race car?

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YouTubePorsche Club of America

In recent years, street cars have gotten so powerful, that their power numbers have eclipsed that of their actual race car counterparts. The Porsche 911 is a great example, with the GT2 RS's 700-horsepower twin-turbo flat-six having a 215-horsepower advantage over the 911 GT3 Cup's naturally aspirated engine.

Steve Dimakos, owner of a new GT2 RS, was curious to see if his car's power would be enough to beat his actual, factory-built race car around Road America. Though the GT2 RS has more power, it also weighs over 540 pounds more than the GT3 Cup. That's thanks to things like sound-deadening, air-conditioning, and safety equipment like airbags and collision structures. Plus, the GT3 rocks a race-only suspension, slicks, and better aerodynamics.

If you're familiar with Road America, you'll know it has three massive straightaways that surely benefit the GT2 RS's higher power output, making this one close race. Luckily, the Porsche Club of America was there to document the whole thing, with IMSA driver Bryan Sellers setting the times. See below to watch the entire video, or, if you just want to see the lap time comparison, skip to 10:25.

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