The timing was forced by an information leak, but the results are just as stunning: The 2013 Ford Shelby Mustang GT500’s V-8 has been officially rated at an eye-watering 662 bhp and 631 lb.-ft. of torque.That makes the all-aluminum, supercharged 4-cam, 4-valve 5.8-liter the most powerful production V-8 in the world. But what’s more impressive [...]No related posts.