The new 2010 Ford Mustang Shelby GT500 delivers the most power and refinement ever for a Ford SVT-tuned performance Mustang - and a few surprises, too. The combination of added horsepower, refinement and functionality makes the 2010 Ford Mustang Shelby GT500 a unique high-performance car. The 2010 Ford Mustang Shelby GT500 is powered by a supercharged and intercooled 5.4-liter dual overhead cam V-8 engine expected to produce 540 horsepower and 510 foot-pounds of torque. The redline is 6,250 rpm. The car's aluminum power dome hood not only adds to the Shelby's appearance, it helps cool the engine through a hood extractor.