Tag Archives: 6.2 liters

Tech: 1,200-Horsepower Shelby GT500

Big Game

Pro Dyno pumps up John Antunes’ Shelby GT500 with a big-bore 6.2

By Steve Turner
Photos courtesy of Pro Dyno

If you weren’t a Mustang enthusiast, you might assume that a Shelby GT500 with a supercharged 5.4-liter engine would provide more than enough propulsion. We know better. A stock GT500 is fun. A modded GT500 is a blast. However, while most people are happy with bolt-on enhancements and tuning, others want something a bit more aggressive. John Antunes falls into the latter category. Continue reading