“In the high-stakes world of performance cars, horsepower is king. It’s the first stat bragged about by owners trying to explain why their Camaro, Challenger or Mustang is better than their foes’, and it’s the headline figure promoted by the automakers themselves year after year.

When Ford announced that the 2013 Shelby GT500 would be punishing the pavement with 650 horses, the world stood up and took notice. Remember, though, these were just estimated figures, as the car had not yet been SAE certified. If reports from the Team Shelby message board prove accurate, the 2013 GT500 has finally gotten its official figures.

How’s about 662 horsepower and 630 pound-feet of torque?

Yep, that’ll do. It’s notable that these figures represent increases of 12 horsepower and 30 lb-ft over the earlier estimates, and they also put even more distance between Ford’s top-performing Mustang and Chevy’s 580-horsepower Camaro ZL1. It also means the Shelby lays down considerably more ponies that the Corvette ZR1 and its 638 horsepower and 604 lb-ft.

Now, will we see a corresponding horsepower-addled response from Chrysler or General Motors? Only time will tell. “

Source: Autoblog