Ford Shelby GT350 Mustang : The Legend Returns
50 years of Ford Shelby Mustang
In recognition of the 50th anniversary of the Shelby GT350, Ford will build a limited run of Shelby GT350 and GT350R Mustangs for 2015.
More than 9.2 million Mustangs have been sold since the car’s 1964 debut.
Only 100 Shelby GT350 models will feature a 2015 model year designation before production switches over to 2016. Of these, 50 will be equipped with the Technology Package and 50 equipped with the Track Package.
“Fans of the Shelby brand are among the most passionate in the automotive industry,” said Henry Ford III, Ford Performance marketing manager. “To honor the passion of our fans for Shelby GT350’s 50th anniversary, a limited run of GT350 models will be built in 2015; these cars will be highly coveted by both Mustang and Shelby enthusiasts alike.”
In 1965, Carroll Shelby developed and sold an FIA-homologated Mustang called the Shelby GT350 competition model. This race-ready Mustang took to tracks around the world, competing in the most prestigious races and against the stiffest competition there was. In addition to winning the Sports Car Club of America’s B Production national championship in 1965, 1966 and 1967, the car entered races throughout South America and Europe, including the 1967 24 Hours of Le Mans.
Ford Shelby GT350 1965 : (image 19 and 20)
Shelby GT350 Mustang 2015
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The new GT350 builds on Carroll Shelby’s original idea – transforming a great every-day car into a dominant road racer – by taking advantage of a dramatically improved sixth-generation Mustang to create a truly special driving experience. Driving enthusiasts behind the wheel of a Shelby GT350 can expect to be treated to the most balanced, nimble and exhilarating production Mustang yet.
“When we started working on this car, we wanted to build the best possible Mustang for the places we most love to drive – challenging back roads with a variety of corners and elevation changes – and the track on weekends,” said Raj Nair, Ford group vice president, Global Product Development. “Every change we made to this car was driven by the functional requirements of a powerful, responsive powerplant – nimble, precise handling and massive stopping power.”
“The final product is essentially an all-new powerplant unique to GT350 – and one that takes true advantage of the new chassis dynamics of the Mustang platform,” said Jamal Hameedi, chief engineer, Ford Global Performance Vehicles.
The new 5.2-liter engine is the first-ever production V8 from Ford with a flat-plane crankshaft, an architecture typically found only in racing applications or exotic European sports cars. Unlike a traditional V8, where the connecting rods are attached to the crankshaft at 90-degree intervals, this design evenly spaces all crank pins at 180-degree intervals.
The 180-degree, flat-plane layout permits a cylinder firing order that alternates between cylinder banks, reducing the overlap of exhaust pressure pulses. When combined with cylinder-head and valvetrain advancements, this permits better cylinder breathing, further extending the performance envelope of the V8.
The result is the most powerful naturally aspirated production Ford engine ever, at more than 500 horsepower, with a torque peak above 400 lb.-ft. The track capability is enhanced by the output characteristics of the engine – the 5.2-liter V8 features an exceptionally broad torque curve. Combined with its high-revving ability, the flat-plane 5.2-liter V8 gives drivers an enormous amount of performance and flexibility within each gear of the lightweight six-speed manual transmission. A standard Ford-tuned Torsen limited-slip differential optimizes cornering grip and straight-line traction.
The new Mustang platform is the strongest in the history of the brand, with torsional stiffness increased 28 percent over the previous model. That stiff structure ensures the suspension geometry remains consistent, even under hard driving on back roads and tracks. Front stiffness is further improved on GT350 with a cutting-edge injection-molded carbon fiber composite grille opening and optional lightweight tower-to-tower brace. The front track has been increased while spring rates and bushings have been recalibrated all around, with ride height reduced compared to Mustang GT.
Due to the significant speeds the car can develop, GT350 features the most track-credible brake system ever offered on a Ford vehicle in terms of absolute stopping power, fade resistance and brake pedal feel. The brakes are two-piece cross-drilled iron discs mounted to aluminum hats. At the front are massive 394-millimeter rotors clamped by Brembo six-piston fixed calipers with integrated caliper bridges, while 380-millimeter rotors at the rear utilize four-piston calipers.
GT350 makes use of extra-stiff 19-inch aluminum-alloy wheels – 10.5 inches wide in front, 11.0 inches in the rear – clad in state-of-the-art Michelin Pilot Super Sport tires with GT350-specific sidewall construction, tread face and compound. The custom tires are designed to deliver maximum grip on the road or at the track.
The athletic stance of the all-new Mustang is further accentuated with recontoured aluminum front fenders to accommodate the wider front track and wider wheel arches. Front fender vents work with vented inner fenders to draw out turbulent air in the wheel wells and smoothly direct it down the side of the car. The forward-angled grille is designed with individual openings to draw air through the radiator, high-pressure engine air intake, cooling ducts for the front brakes and, optional with the Track Pack, an engine oil cooler and a transmission cooler.
Arriving later this year, the new Shelby GT350R has been designed and engineered in the same spirit, delivering never-before-seen track capability from a Mustang – thanks to innovations in aerodynamics, chassis engineering and light-weighting.
Shelby GT350R Mustang 2015
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- A combination of changes to aerodynamics and suspension tuning to the new Shelby® GT350R Mustang leads to most race-ready road-legal Mustang ever
- Significant engineering innovations result in weight savings, aero improvements to benefit on-track performance; Ford is the first major automaker to introduce carbon fiber wheels as standard equipment on Shelby GT350R Mustang
- New Shelby GT350R, a limited-production performance Mustang, will be available later this year
“The Shelby GT350R Mustang is a no-compromise car in the pursuit of maximum track capability,” said Raj Nair, Ford group vice president, Global Product Development. “It is a thoroughbred street car making use of technology and ingenuity to deliver performance few enthusiasts have ever experienced.”
The car features the first-ever production V8 from Ford with a flat-plane crankshaft – the most powerful naturally aspirated engine Ford has ever produced – plus a specially tuned suspension. It is fitted with revised spring rates and antiroll bars, lower ride height, unique track-tuned alignment settings, revised bushings and jounce bumpers, cross-axis ball joints in the front suspension, and revised calibration controlling the MagneRide dampers.
“The Shelby GT350R Mustang is a car with the nimbleness and power delivery you want on a road course,” said Nair. “This isn’t just about horsepower. The Shelby GT350R is an all-around balanced athlete – one that is extraordinarily precise and agile.”
Track technology for the street
Carbon fiber wheels have been offered on only a handful of exotic supercars and will benefit Shelby GT350R performance by shaving critical unsprung weight and reducing rolling inertia. The 19x11-inch front and 19x11.5-inch rear wheels provide approximately 13 pounds of unsprung weight reduction per wheel and offer higher levels of stiffness than equivalent aluminum wheels.
The lightweight wheels will be shod in Michelin’s top-shelf Pilot Sport Cup 2 high-performance tires with rubber compound and a construction unique to Shelby GT350R. This combination of incredibly stiff and light wheels with bespoke tires offers customers exceptional steering feel and levels of performance.
Weight reduction in pursuit of performance
Items removed include air conditioning, the stereo system, rear seats, trunk floorboard and carpet, backup camera and emergency tire sealer and inflator. Exhaust resonators also have been removed for weight savings with the benefit of creating a sharper exhaust tone.
Shelby GT350R is more than 130 pounds lighter than the Shelby GT350 Track Pack model, which has proven its durability in multiple 24-hour racetrack tests.
For customers seeking more comfort in their Shelby GT350R, Ford is offering an optional Electronics Package. Included is dual-zone air conditioning, 8-inch touch screen with navigation, seven-speaker audio system, turn signal mirrors and more.
Revisions to the front splitter maximize downforce, while an all-new high-efficiency carbon fiber rear wing has been added in anticipation of competition. The wing moves the vehicle’s center of pressure rearward while improving downforce and lift balance – ideal for high-speed track work.
“Shelby GT350R’s highly efficient aerodynamics, innovative light-weighting and world-class chassis deliver a truly spectacular driving experience that makes you feel like a professional racing driver,” said Kerry Baldori, Ford Performance chief functional engineer.
Unlike traditional V8s, where the connecting rods are attached to the crankshaft at 90-degree intervals, this design evenly spaces all crank pins at 180-degree intervals to optimize high-speed engine breathing. It is the most powerful naturally aspirated production Ford engine ever, with more than 500 horsepower and more than 400 lb.-ft. of torque.
An air-to-oil engine oil cooler typically found only on race cars maintains engine temperatures under the most severe conditions, as does a standard cooler for the six-speed manual transmission.
A Ford-tuned limited-slip Torsen differential with 3.73 axle ratio is optimized for cornering grip and straight-line traction, while an electronically modulated rear-mounted air-to-oil differential cooler maintains ideal temperatures during track driving.
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