|Manufacturer||Ford Advanced Vehicles
John Wyer Automotive Engineering
|Assembly||Slough, UK (Mk I, Mk II, and Mk III)
Wixom, Michigan, USA (Mk IV)
|Body and chassis|
|Class||Group 4 Sports Car
Group 6 Sports Prototype
|Engine||4181 cc (255 CID) V-8
4737 cc (289 CID) V-8
6997 cc (427 CID) V-8
4942 cc (302 CID) V-8
|Wheelbase||95 in (2,413 mm)|
|Length||160 in (4,064 mm)|
|Width||70 in (1,778 mm)|
|Height||40.5 in (1,029 mm)|
|Curb weight||2,002 lb (908 kg)|
|Successor||Ford P68 and Ford GT|
The Ford GT40 is a high performance American-British endurance racing car, built and designed in England (Mk I, Mk II, and Mk III) and in the United States (Mk IV), and powered by a series of American-built engines, which won the 24 Hours of Le Mans four consecutive times, from 1966 to 1969 (1966 being the Mk II, 1967 the Mk IV, and 1968-1969 the oldest chassis design, the Mk I), Including a 1-2-3 finish in 1966. In 1966, with Henry Ford II himself in attendance at Le Mans, the Mk II GT40 provided Ford with the first overall Le Mans victory for an American manufacturer  and the first victory for an American manufacturer at a major European race since Jimmy Murphy´s triumph with Duesenberg at the 1921 French Grand Prix. The Mk IV GT40 that won LeMans in 1967 is the only car designed and built entirely in the United States to win the overall title.
The GT40 was originally produced to win long-distance sports car races against Ferrari (who won at Le Mans six times in a row from 1960 to 1965). FORD/Shelby Chassis # P-1075, which won in 1968 and 1969, is the first car in Le Mans history to win the race more than once, with the same chassis. Using an American Ford V-8 engine originally of 4.7-litre displacement capacity (289 cubic inches). It was later enlarged to the 4.9-litre engine (302 cubic inches), with custom designed alloy Gurney-Weslake cylinder heads.
The car was named the GT (for Grand Touring) with the 40 representing its overall height of 40 inches (1.02 m, measured at the windshield) as required by the rules. Large displacement Ford V8 engines (4.2 litre, 4.7 litre and 7 litre) were used, compared with the Ferrari V12 which displaced 3.0 litres or 4.0 litres.
Early cars were simply named "Ford GT". The name "GT40" was the name of Ford's project to prepare the cars for the international endurance racing circuit, and the quest to win the 24 Hours of Le Mans. The first 12 "prototype" vehicles carried serial numbers GT-101 through GT-112. The "production" began and the subsequent cars, the MkI, MkII, and MkIIIs, (with the exception of the MkIV, which were numbered J1-J12) were numbered GT40P/1000 through GT40P/1145, were officially "GT40s". The name of Ford's project, and the serial numbers dispel the story that "GT40" was "only a nickname."
The contemporary Ford GT is a modern homage to the GT40.
Henry Ford II had wanted a Ford at Le Mans since the early 1960s.
In the spring of 1963, Ford reportedly received word through a European intermediary that Enzo Ferrari was interested in selling to Ford Motor Company. Ford reportedly spent several million dollars in an audit of Ferrari factory assets and in legal negotiations, only to have Ferrari unilaterally cut off talks at a late stage due to disputes about the ability to direct open wheel racing. Ferrari, who wanted to remain the sole operator of his company's motor sports division, was angered when he was told that he would not be allowed to race at the Indianapolis 500 if the deal went through since Ford fielded Indy cars using the company's engine, and didn't want competition from Ferrari. Enzo cut the deal off out of spite and Henry Ford II, enraged, directed his racing division to find a company that could build a Ferrari-beater on the world endurance-racing circuit.
Lotus was already a Ford partner for their Indy 500 project, but Ford executives doubted the ability of Lotus to handle this new project. Colin Chapman probably had similar views as he asked a high price for his contribution and insisted that the car (which became the Lotus Europa) should be named a Lotus-Ford.
The Lola proposal was chosen, since Lola had used a Ford V8 engine in their mid-engined Lola Mk6 (also known as Lola GT). It was one of the most advanced racing cars of the time, and made a noted performance in Le Mans 1963, even though the car did not finish, due to low gearing and slow revving out on the Mulsanne Straight. However, Eric Broadley, Lola Cars' owner and chief designer, agreed on a short-term personal contribution to the project without involving Lola Cars.
The agreement with Broadley included a one-year collaboration between Ford and Broadley, and the sale of the two Lola Mk 6 chassis builds to Ford. To form the development team, Ford also hired the ex-Aston Martin team manager John Wyer. Ford Motor Co. engineer Roy Lunn was sent to England; he had designed the mid-engined Mustang I concept car powered by a 1.7 litre V4. Despite the small engine of the Mustang I, Lunn was the only Dearborn engineer to have some experience with a mid-engined car.
Overseen by Harley Copp, the team of Broadley, Lunn and Wyer began working on the new car at the Lola Factory in Bromley. At the end of 1963 the team moved to Slough, near Heathrow airport. Ford then established Ford Advanced Vehicles Ltd, a new subsidiary under the direction of Wyer, to manage the project.
The first chassis built by Abbey Panels of Coventry was delivered on March 16, 1963, with fibre-glass mouldings produced by Fibre Glass Engineering Ltd of Farnham. The first "Ford GT" the GT/101 was unveiled in England on April 1 and soon after exhibited in New York. Purchase price of the completed car for competition use was £5,200.
It was powered by the 4.2 L Fairlane engine with a Colotti transaxle, the same power plant was used by the Lola GT and the single-seater Lotus 29 that came in a highly controversial second at the Indy 500 in 1963. (A DOHC head design was used in later years at Indy. It won in 1965 in the Lotus 38.)
The Ford GT40 was first raced in May 1964 at the Nürburgring 1000 km race where it retired with suspension failure after holding second place early in the event. Three weeks later at the 24 Hours of Le Mans, all three entries retired although the Ginther/Gregory car led the field from the second lap until its first pitstop. After a season-long series of dismal results under John Wyer in 1964, the program was handed over to Carroll Shelby after the 1964 Nassau race. The cars were sent directly to Shelby, still bearing the dirt and damage from the Nassau race. Carroll Shelby was noted for complaining that the cars were poorly maintained when he received them, but later information revealed the cars were packed up as soon as the race was over, and FAV never had a chance to clean, and organize the cars to be transported to Shelby.
Shelby's first victory came on their maiden race with the Ford program, with Ken Miles and Lloyd Ruby taking a Shelby American-entered Ford GT  to victory in the Daytona 2000 in February 1965. The rest of the season, however, was a disaster.
The experience gained in 1964 and 1965 allowed the 7-litre Mk II to dominate the following year. In February, the GT40 again won at Daytona. This was the first year Daytona was run in the 24 Hour format and Mk II's finished 1st, 2nd, and 3rd. In March, at the 1966 12 Hours of Sebring, GT40's again took all three top finishes with the X-1 Roadster first, a Mk. II taking second, and a Mk. I in third. Then in June at the 24 Hours of Le Mans the GT40 achieved yet another 1-2-3 result.
The Le Mans finish, however, was clouded in controversy: in the final few hours, the Ford GT of New Zealanders Bruce McLaren and Chris Amon closely trailed the leading Ford GT driven by Englishman Ken Miles and New Zealander Denny Hulme. With a multi-million-dollar program finally on the very brink of success, Ford team officials faced a difficult choice. They could allow the drivers to settle the outcome by racing each other – and risk one or both cars breaking down or crashing. They could dictate a finishing order to the drivers – guaranteeing that one set of drivers would be extremely unhappy. Or they could arrange a tie, with the McLaren/Amon and Miles/Hulme cars crossing the line side-by-side.
The team chose the last and informed McLaren and Miles of the decision just before the two got in their cars for the final stint. Then, not long before the finish, the Automobile Club de l'Ouest (ACO), organizers of the Le Mans event, informed Ford that the geographical difference in starting positions would be taken into account at a close finish – meaning that the McLaren/Amon vehicle, which had started perhaps 60 feet (18 m) behind the Hulme-Miles car, would have covered slightly more ground over the 24 hours and would therefore be the winner. Secondly, Ford officials admitted later, the company's contentious relationship with Miles, its top contract driver, placed executives in a difficult position. They could reward an outstanding driver who had been at times extremely difficult to work with, or they could decide in favour of drivers (McLaren/Amon) with less commitment to the Ford program but who had been easier to deal with. Ford stuck with the orchestrated photo finish but Miles, deeply bitter over this decision after his dedication to the program, issued his own protest by suddenly slowing just yards from the finish and letting McLaren across the line first. Miles died in a testing accident in the J-car (later to become the Mk IV) at Riverside (CA) Raceway just two months later.
Miles' death occurred at the wheel of the Ford "J-car", an iteration of the GT40 that included several unique features. These included an aluminum honeycomb chassis construction and a "breadvan" body design that experimented with "kammback" aerodynamic theories. Unfortunately, the fatal Miles accident was attributed at least partly to the unproven aerodynamics of the J-car design, as well as the experimental chassis' strength. The team embarked on a complete redesign of the car, which became known as the Mk IV. The Mk IV, a newer design with a Mk II engine but a different chassis and a different body, won the following year at Le Mans (when four Mark IVs, three Mark IIs and three Mark Is raced). The high speeds achieved in that race caused a rule change, which already came in effect in 1968: the prototypes were limited to the capacity of to 3.0 litre, the same as in Formula One. This took out the V12-powered Ferrari 330P as well as the Chaparral and the Mk. IV.
If at least 50 cars had been built, sportscars like the GT40 and the Lola T70 were allowed, with a maximum of 5.0 L. John Wyer's revised 4.7 litre (bored to 4.9 litres, and o-rings cut and installed between the deck and head to prevent head gasket failure, a common problem found with the 4.7 engine) Mk I. It won the 24 hours of Le Mans race in 1968 against the fragile smaller prototypes. This result, added to four other round wins for the GT40, gave Ford victory in the 1968 International Championship for Makes. The GT40's intended 3.0 L replacement, the Ford P68, and Mirage cars proved a dismal failure. While facing more experienced prototypes and the new yet still unreliable 4.5 L flat-12 powered Porsche 917s, the 1969 24 Hours of Le Mans winners Jacky Ickx/Jackie Oliver managed to beat the remaining 3.0 litre Porsche 908 by just a few seconds with the already outdated GT40 Mk I (in the very car that had won in 1968 - the legendary GT40P/1075). Apart from brake wear in the Porsche and the decision not to change pads so close to the race end, the winning combination was relaxed driving by both GT40 drivers and heroic efforts at the right time by (at that time Le Mans' rookie) Ickx, who won Le Mans five more times in later years. In 1970, the revised Porsche 917 dominated, and the GT40 had become obsolete.
Le Mans 24 Hour victories
|Le Mans 24 Hour victories|
|1966||Mk II||Shelby-American Inc.|| Bruce McLaren
|Ford 7.0L V8||G||4843.09||130.98||210.80|
|1967||Mk IV||Shelby-American Inc.|| Dan Gurney
A. J. Foyt
|Ford 7.0L V8||G||5232.9||135.48||218.03|
|1968||Mk I||John Wyer Automotive Engineering Ltd.|| Pedro Rodriguez
|Ford 4.9 L V8||4452.88||115.29||185.54|
|1969||Mk I||John Wyer Automotive Engineering Ltd.|| Jacky Ickx
|Ford 4.9 L V8||4997.88||129.40||208.25|
In addition to four consecutive overall Le Mans victories, Ford also won the following four FIA international titles (at what was then unofficially known as the World Sportscar Championship) with the GT40:
- 1966 International Manufacturers Championship - Over 2000cc
- 1966 International Championship for Sports Cars - Division III (Over 2000cc)
- 1967 International Championship for Sports Cars - Division III (Over 2000cc)
- 1968 International Championship for Makes
The Mk I was the original Ford GT40. Early prototypes were powered by 4.2 litre (255 cu.in) alloy V8 engines  and production models were powered by 4.7 litre (289 cu.in) engines as used in the Ford Mustang. Five prototype models were built with roadster bodywork, including the Ford X-1.
The Mk.I was modified and run by John Wyer in 1968 and 1969, winning Le Mans in both those years and Sebring in 1969. The Mk.II and IV were both obsolete after the FIA had changed the rules to ban unlimited capacity engines; but the Mk.I, with its smaller engine, was legally able to race.
- X-1 Roadster
The X-1 was a roadster built to contest the Fall 1965 North American Pro Series, a forerunner of Can-Am, entered by the Bruce McLaren team and driven by Chris Amon. The car had an aluminum chassis built at Abbey Panels and was originally powered by a 4.7 liter (289ci) engine. The real purpose of this car was to test several improvements originating from Kar Kraft, Shelby and McLaren. Several gearboxes were used: a Hewland LG500 and at least one automatic gearbox. It was later upgraded to Mk II specifications with a 7.0 liter (427ci) engine and a standard four ratio Kar Kraft (subsidiary of Ford) gearbox, however the car kept specific features such as its open roof and lightweight aluminum chassis. The car went on to win the 12 Hours of Sebring in 1966. The X-1 was a one-off and was later ordered to be destroyed by customs officials.
The Mk.II was very similar in appearance to the Mk.I, but it actually was a bit different from its predecessor. It used the 7.0 litre FE (427 ci) engine from the Ford Galaxie, which was an engine used in NASCAR at the time—but the engine was modified for road course use. The car's chassis was more or less the same as the British-built Mk.I chassis, but it and other parts of the car had to be re-designed and modified by Carroll Shelby's organization in order to accommodate the larger and heavier 427 engine. A new Kar Kraft-built 4 speed gearbox (same as the one described above) was built to handle the more powerful engine, replacing the ZF 5-speed used in the Mk.I. This car is sometimes referred to as the Ford Mk.II.
In 1966, the Mk.II began dominating the world famous 24 Hours of Le Mans race in France. In 1966 the Mk.II took Europe by surprise and beat Ferrari to finish 1-2-3 in the standings. Ford GT40's went on to win the race for four consecutive years (1966-1969).
For 1967, the Mk.II's were upgraded to "B" spec; they had re-designed bodywork and twin carburettors for an additional 15 hp. A batch of wrongly heat treated input shafts in the transaxles sidelined virtually every Ford in the race at Daytona, however, and Ferrari won 1-2-3. The Mk.IIB's were also used for Sebring and Le Mans that year, and also it won the Reims 12 Hours in France. For the Daytona 24 Hours, two Mk II models (chassis 1016 and 1047) had their engines re-badged as Mercury engines. Mercury was a Ford Motor Company division at that time, and Mercury's 427 was exactly the same engine as Ford's with different logos. Ford saw a good opportunity to advertise that division of the company.
The Mk III was a road-car only, of which 7 were built. The car had four headlamps, the rear part of the body was expanded to make room for luggage, the 4.7 litre engine was detuned to 335 bhp (250 kW), the shock absorbers were softened, the shift lever was moved to the center and the car was available with the steering wheel on the left side of the car. As the Mk III looked significantly different from the racing models many customers interested in buying a GT40 for road use chose to buy a Mk I that was available from Wyer Ltd. Of the 7 MK III that were produced 4 were left hand drive. One of these examples is currently on display at the Petersen Automotive Museum.
In an effort to develop a car with better aerodynamics and lighter weight, it was decided to retain the 7 litre engine, but redesign the rest of the car and ditch the Mk.I/Mk.II chassis. In order to bring the car more "in house" and lessening partnership with English firms, Ford Advanced Vehicles was sold to John Wyer and the new car was designed by Ford's studios and produced by Ford's subsidiary Kar Kraft under Ed Hull. There was also a partnership with the Brunswick Aircraft Corporation for expertise on the novel use of honeycomb aluminium panels bonded together to form a lightweight but rigid "tub". The car was designated as the J-car, as it was constructed to meet the new Appendix J regulations  which were introduced by the FIA in 1966.
The first J-car was completed in March, 1966 and set the fastest time at the Le Mans trials that year. The tub weighed only 86 lb (39 kg), and the entire car weighed only 2,660 lb (1,210 kg), 300 lb (140 kg) less than the Mk II. It was decided to run the MkIIs due to their proven reliability, however, and little or no development was done on the J-car for the rest of the season. Following Le Mans, the development program for the J-car was resumed, and a second car was built. During a test session at Riverside International Raceway in August 1966, with Ken Miles driving, the car suddenly went out of control at the end of Riverside's high-speed, 1-mile-long back straight. The honeycomb chassis did not live up to its design goal, shattering upon impact, bursting into flames and killing Miles. It was determined that the unique, flat-topped "bread van" aerodynamics of the car, lacking any sort of spoiler, were implicated in generating excess lift. Therefore a more conventional but significantly more aerodynamic body was designed for the subsequent development of the J-car which was officially known as the GT40 Mk IV. A total of nine cars were constructed with J-car chassis numbers although six were designated as Mk IVs and one as the G7A.
The Mk IV was built around a reinforced J chassis powered by the same 7.0 L engine as the Mk II. Excluding the engine, gearbox, some suspension parts and the brakes from the Mk.II, the Mk.IV was totally different from other GT40s, using a specific chassis and specific bodywork. It was undoubtedly the most radical and American variant of all the GT40's over the years. As a direct result of the Miles accident, the team installed a NASCAR-style steel-tube roll cage in the Mk.IV, which made it much safer, but the roll cage was so heavy that it negated most of the weight saving of the then-highly advanced, radically innovative honeycomb-panel construction. The Mk. IV had a long, streamlined shape, which gave it exceptional top speed, crucial to do well at Le Mans in those days (a circuit made up almost entirely of straights)- the race it is was ultimately built for. A 2-speed automatic gearbox was tried, but during the extensive testing of the J-car in 1966 and 1967, it was decided that the 4-speed from the Mk.II would be retained. Dan Gurney often complained about the weight of the Mk.IV, since the car was 600 pounds (270 kg) heavier than the Ferrari 330 P4's. During practice at Le Mans in 1967, in an effort to preserve the highly stressed brakes, Gurney developed a strategy (also adopted by co-driver A.J. Foyt) of backing completely off the throttle several hundred yards before the approach to the Mulsanne hairpin and virtually coasting into the braking area. This technique saved the brakes, but the resulting increase in the car's recorded lap times during practice led to speculation within the Ford team that Gurney and Foyt, in an effort to compromise on chassis settings, had hopelessly "dialed out" their car. The car proved to be fastest in a straight line that year thanks to its streamlined aerodynamics- it did 212 mph on the 3.6 mile Mulsanne Straight.
The Mk. IV ran in only two races, the 1967 12 Hours of Sebring and the 1967 24 Hours of Le Mans and won both events. Only one Mk.IV was completed for Sebring; the pressure from Ford had been amped up considerably after Ford's humiliation at Daytona 2 months earlier. Mario Andretti and Bruce McLaren won Sebring, Dan Gurney and A.J. Foyt won Le Mans (Gurney and Foyt's car was the Mk.IV that was apparently least likely to win), where the Ford-representing Shelby-American and Holman & Moody teams showed up to Le Mans with 2 Mk.IV's each. The installation of the roll cage was ultimately credited by many with saving the life of Andretti, who crashed violently at the Esses during the 1967 Le Mans 24 Hours, but escaped with minor injuries. Unlike the earlier Mk.I - III cars, which were built in England, the Mk.IVs were built in America by Kar Kraft. Le Mans 1967 remains the only truly all-American victory in Le Mans history - American drivers, team, chassis, engine and tires. A total of 6 Mk IVs were constructed. One of the Mk IVs was rebuilt to the Ford G7 in 1968, and used in the Can-Am series for 1969 and 1970, but with no success. This car is sometimes referred to as the Ford Mk.IV.
Continuation Models, Replicas & Modernisations
Several kit cars and replicas inspired by the Ford GT40 have been built. They are generally intended for assembly by the enthusiast in a home workshop or garage. There are two alternatives to the kit car approach, either continuation models (exact and licensed replicas true to the original GT40), or modernizations (replicas with upgraded components, ergonomics & trim for improved usability, drivability and performance).
- GT40/R Competition, United States: Authentic GT40 built by Superformance and co-designed with Pathfinder Motorsports. A GT40/R (GT40P/2094) campaigned by Pathfinder Motorsports with an engine built by Holman Moody won both the 2009 US Vintage Grand Prix and the 2009 Governor's Cup at Watkins Glen.
- CAV GT: Originally designed for customers to built as a kit, the CAV GT has evolved into a modernized replica that is now factory-built in Cape Town, South Africa.
- Holman Moody: GT40 Mark IIs won third at Le Mans in 1966, still manufacture a small number of GT40s from 1966 blueprints
- GT40 Spyder, United States: Built by E.R.A. Replica Automobiles in New Britain, CT, the Spyder is a MK2 Canadian American (CAN-AM) racing replica.
While similar in appearance to the original cars, it was bigger, wider, and three inches taller than the original 40 inches (1.02 m). Three production prototype cars were shown in 2003 as part of Ford's centenary, and delivery of the production Ford GT began in the fall of 2004. The Ford GT was assembled in the Ford Wixom plant and painted by Saleen, Incorporated at their Saleen Special Vehicles plant in Troy, Michigan, USA.
A British company, Safir Engineering, who made continuation GT40s in the 1980s owned the GT40 trademark at that time, and when they completed production, they sold the excess parts, tooling, design, and trademark to a small American company called Safir GT40 Spares based in Ohio. Safir GT40 Spares licensed the use of the GT40 trademark to Ford for the initial 2002 show car, but when Ford decided to make the production vehicle, negotiations between the two failed, and as a result the new Ford GT does not wear the badge GT40. Safir GT40 Spares asked $40 million for the rights, which Ford declined.
Bob Wood, one of three partners who own Safir GT40 Spares, said: "When we talked with Ford, they asked what we wanted. We said that Ford owns Beanstalk in New York, the company that licenses the Blue Oval for Ford on such things as T-shirts. Since Beanstalk gets 7.5 percent of the retail cost of the item for licensing the name, we suggested 7.5 percent on each GT40 sold." At the then-estimated $125,000 per copy, 7.5% of 4,500 vehicles would have totalled approximately $42,187,500. Later models or prototypes have also been called the Ford GT but have had different numbering on them such as the Ford GT90 or the Ford GT70. The GT40 name is currently licensed to Hi-Tech Automotive in South Africa, the manufacturer who builds Superformance.
A second-generation Ford GT was unveiled at the 2015 North American International Auto Show. It features a 3.5L twin-turbocharged V6 engine, carbon fiber monocoque and body panels, pushrod suspension and active aerodynamics. It will compete in the FIA World Endurance Championship and the United SportsCar Championship.
- Ford Supervan, a van-bodied variant
- Bundle of Snakes, characteristic exhaust system
- Colotti Trasmissioni, transmission of the initial, and early models
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- Auto Passion n°49 July 1991 (in French)
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