The 2011 Shelby GT500 is powered by an all-new aluminum-block 5.4-liter supercharged V-8 engine, which produces 550 horsepower and 510 ft.-lb. of torque, a 10 horsepower increase versus the 2010 model. The engine also is 102 pounds lighter than its predecessor, delivering a better power-to-weight ratio, improved fuel economy, acceleration, handling and steering precision.

This 2011 Shelby GT500 will be the first modern Shelby without the gas guzzler tax, thanks to the EPA-projected 23 mpg highway and 15 mpg city it will deliver. This is up from 22 mpg highway and 14 mpg city for the 2010 model.

Numerous aerodynamic upgrades, including a redesigned splitter, were made to the front end resulting in increased downforce and reduced drag.  Another obvious difference for the Shelby is the addition of racing stripes.  Even the classic white shift knob - an icon of Shelby Mustang DNA from years past - received special attention. First, it had to be the traditional white. It also had to be specific to the Shelby. The answer was to combine the racing-stripes theme with the traditional "H" pattern found on shifters to create a one-of-a-kind knob. Like the exterior, the racing stripes wrap from end to end, encircling the knob.

The twin-disc clutch on the six-speed manual transmission has been significantly upgraded, improving drivability and NVH. The discs on the 2010 Shelby GT500 are larger - 250 mm in diameter compared with 215 mm in diameter on the outgoing model - and made of copper and fiberglass to make them more robust.

A unique component of the twin-disc system is the control of the intermediate disc. Rather than floating, it instead has six straps that control the engagement of the clutch, improving drivability.
 
 

Celebrating the fortieth anniversary of the original Shelby Cobra GT500KR, Ford and Shelby collaborate on a new ‘King of the Road’ Mustang with the 2008 Shelby GT500KR. Ford Shelby GT500KR features an estimated 540-hp 5.4-liter supercharged V-8 with a Ford Racing Power Upgrade Pack, 3.73:1 rear axle ratio, short-throw shifter, and unique suspension tuning. Exterior design draws inspiration from the classic Shelby KR Mustangs and features unique carbon composite hood, wheels, and special 40th Anniversary badging and unique striping.

Power is delivered to the rear wheels through a Tremec TR6060 six-speed manual transmission and 3.73:1 rear axle ratio, upgraded from the standard GT500’s 3.31:1. Gear selection is courtesy of an all-new Ford Racing short-throw shifter making its debut on the KR. Topped with a white ball, the new shifter is 25 percent shorter than the unit on the GT500 providing for crisper, sharper shifts.

Ford SVT, Ford Racing and Team Shelby worked together to develop the KR’s suspension tuning. Based on initial work by Ford Racing and the team at Shelby, often at Shelby’s own facility on the grounds of Las Vegas Motor Speedway, Ford SVT chassis engineers will apply fine tuning techniques to prepare it for the streets.

An exclusive run of 1000 units will make this among the most coveted of Mustangs.

Ford Racing Performance Group is supplying its popular Power Pack (FR1) to add a genuine 25-horsepower Ford performance kick to the 300-horse Mustang GT 4.6L V-8/Five-speed automatic transmission powertrain and an increase of 10 lb-ft of torque. The package includes Ford Racing’s 90mm Cold Air kit, the Muffler Kit, a new X-pipe similar to the one used on the new Ford Shelby GT500 Mustang, a performance calibration and a cat-back performance exhaust for that throaty sound that will make this car unmistakably a Shelby Mustang GT-H.

To put that extra horsepower to the ground, the Ford Shelby GT-H also comes with the Ford Racing Handling Pack (FR3) installed, including special-tuned dampers inspired from the FR500C, lowering springs, sway bars and a strut tower brace – plus a Ford Racing 3.55:1 ratio rear axle assembly for extra off-the-line acceleration.