Watch the dyno vid here: 2013 GT500 Underrated?
The guys Mustang and Super Fords magazine got their hands on the new GT500 and were able get it to a dyno machine. Surprisingly, the car managed to 609 horsepower at the wheels. Officially, Ford rated the car at 662 crank horsepower, but it's probably a lot more than that if the dyno is correct. Convinced? Check out the video above.