First unveiled at the Los Angeles Auto Show in November 2011, Ford Shelby GT500 is the mostpowerful Mustang ever. The DOHC 354.6 cubic inches (5.811l) 32-V V8 supercharged engine is certified to produce 662bhp and 631lb-ft of torque, with a claimed top speed of 202 miles per hour. The new GT500 weighs 3,850 pounds and was available starting May 2012.The 2013-14 models have various improvements and differences compared to the GT500 of 2012 including new front end sheet metal along with standard HID headlamps, along with a new LED tail light assembly. The new 2013-14 Shelby GT500 also has no grill, due to the massive amount of cooling required for the vehicle. Performance changes include twin fuel pumps (a Mustang GT's single supply pump, twice over), larger fuel injectors, a grippier and larger-diameter clutch, a larger fan, a three-row intercooler (the previous car used a double-row unit), a beefed-up Tremec 6060 six-speed with an internal oil pump, and a single-piece carbon-fiber driveshaft. Larger Brembo front disc brakes with six-piston calipers, reinforced axle tubes, and aero tweaks to help the car reach 200+mph safely. Ford says the changes have resulted in a 14-percent reduction in drag and a 66-percent increase in front-end downforce. An rpm-adjustable electronic launch-control function is standard, as is four-mode electronic stability control.
A Performance package is also offered, adding two-mode adjustable Bilstein dampers and a Torsen limited-slip rear differential. In addition to the Performance package, a Track package for road racing can be ordered bringing a transmission cooler, a nose-mounted differential cooler for the Torsen limited-slip unit, and an air-to-oil engine-oil cooler. Wilwood disc brakes was also brought on board with an improved stopping package.
A Motor Trend magazine May 2012 road test provided a 0-60 time of 3.5 seconds and a quarter mile time of 11.6 seconds at 125.7 miles per hour (202.3km/h). By comparison the '14 GT500 is faster than both the Camaro ZL1 and Corvette Z06.[48]
Automobile-Catalog computer model estimates provided a 0-60 time of 3.3 seconds, a quarter mile time of 11.3 seconds at 130 miles per hour and a top speed of 208 miles per hour.