The ponycar fanboys at 5.0 Mustangs and Super Fords took a Shelby GT500KR press car, strapped it down on a Dynapack chassis dyno, hit the gas and recorded a monster 509 HP and 467.7 lb-ft of torque. When you factor in driveline losses, that means the King of the Road is putting out 590 HP and 550 lb-ft. That's significantly more power at the flywheel than Ford is letting on to.
Those kind of numbers are usually reserved for the elite, which explains the car's $80,000 price tag, plus whatever the dealer thinks he should add for his, you know, trouble. [5.0 Mustangs and Super Fords]