Ford Shelby GT500KR

Long live the King! The 2008 Ford Shelby GT500KR, "King of the Road" assumes the throne, taking its rightful place as the ultimate American muscle car.

The GT500KR builds on the already impressive stats of the Shelby GT500, with 40 more horsepower, an additional 30 foot-pounds of torque and an array of chassis, aero and weight-reduction measures to offer world-class performance. Engineered by Ford SVT with final assembly by Shelby Automobiles, it blends track learnings from the Ford Racing Mustang FR500C and the ingenuity of Carroll Shelby to deliver the ultimate in Mustang performance.

"Every new Shelby Mustang renews my energy and passion for performance," said Carroll Shelby, founder of Shelby Automobiles. "I'm just as excited about the 2008 KR as I was when I developed the first one. The team has done a great job with this car. It is this is truly the best Shelby Mustang we've ever built...so far."

The Shelby GT500KR is the latest in a royal lineage that spans more than 40 years, beginning with the 1965 Shelby GT350 and including the original 1968 Shelby GT500KR that provided the inspiration. Carroll Shelby has played an active role in the development of every one.

"When the names Mustang and Shelby come together, the results are never anything less than amazing," said Robert Parker, Ford Car Marketing manager. "Mustang has earned an endearing place in America's hearts, topping the sports car segment for 22 straight years. The GT500KR is sure to get those hearts pumping even faster."

[b]Delivering the Ultimate in Mustang Performance[/b]
Just like its 1968 namesake, the 2008 Shelby GT500KR builds on the strong foundation of the Shelby GT500. Ford and Shelby designers collaborated to channel the classic KR design cues and finesse them into the iconic lines of the new Mustang. Most noticeable are the modern interpretation of the distinctive, sculpted KR hood and classic Le Mans-style striping.

The development team spent countless hours designing a car that pays homage to the 1968 "King of the Road," but this thoroughbred is more than just a pretty face. The GT500KR is inspired by Ford Racing's experience on the race track and finessed with the trademark SVT engineering and Shelby Automobiles' proven delivery of balanced performance production for the street. Its chassis incorporates unique suspension components developed especially for the KR.

The suspension's stiffness has been enhanced with wheel rates 17 percent higher in the front and 7 percent higher in the rear. Every other element of the chassis system – such as sway bars and shock absorbers – has been tuned especially to improve King of the Road's handling.

The new suspension was tuned to work with the Goodyear high-performance, P255/45Z18 front and P285/40ZR18 rear tires, developed specifically for the KR, with a compound that is exclusive to North America. The stickier tires help the short 3.73:1 rear gear (compared to the GT500's 3.31:1 rear gear) send maximum horsepower to the road and are an important component in the overall handling balance.

"The KR is much more than just a great straight-line performer. It's the complete package − handling, power and performance," said Jamal Hameedi, chief program engineer at Ford SVT. "The team put the GT500KR through rigorous testing and have witnessed slalom runs with sustained lateral acceleration of 1.0g on the skidpad. Those are world-class numbers."

The GT500KR doesn't just go better, it stops better. The new tires work with a recalibrated anti-lock braking system (ABS) that results in improved stopping distances 6 feet shorter from 60 to 0 than the stock GT500. The ABS system has been tuned to be unobtrusive during spirited driving. Similar honing was undertaken with the vehicle's traction-control system to optimize acceleration

The GT500KR's impeccable balance of handling and performance is the result of a holistic approach to the development, looking at the total vehicle with chassis and powertrain engineers working together to optimize all vehicle attributes.

For example, a new front splitter and revised rear spoiler aid in aerodynamic improvements, adding downforce over the front axle and moving the center of aero pressure forward in the vehicle to improve high-speed balance and stable, predictable braking character. The ride height has been lowered to the optimum setting for on-the-limit handling, lowering the front by 20 mm and the rear by 15 mm.

"The KR is more responsive and has more body control," said Gary Davis, vice president of production for Shelby Automobiles. "It delivers even more racing feel than a stock GT500. Yet it's still extremely comfortable and doesn't beat you up like some performance cars. We've been able to increase handling substantially without giving up a lot in ride comfort."

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Credits: Jarvis