Home - Videos - A Shelby GT500 with a Whipple 3.4 supercharger upgrade pulls 698 rwhp on the dyno A Shelby GT500 with a Whipple 3.4 supercharger upgrade pulls 698 rwhp on the dyno ModernMustangMuscle.com is not affiliated with or endorsed by Ford Motor Company Copyright 2008 All Rights Reserved Contact Us | Advertising | About | Legal | Privacy