Officially rated at 662 horsepower, it didn’t take long for new owners of the 2013 Shelby GT500 to get on the dyno. And what they’re finding is that Ford has seriously underrated their Mustang supercar.
Video: 2013 Shelby GT500 Puts Down 609 RWHP
Posted on: May 21, 2012
Posted in: On the Dyno