Ford GT40
Encyclopedia
The Ford GT40 was a high performance sports car
Sports car
A sports car is a small, usually two seat, two door automobile designed for high speed driving and maneuverability....

 and winner of the 24 hours of Le Mans
24 Hours of Le Mans
The 24 Hours of Le Mans is the world's oldest sports car race in endurance racing, held annually since near the town of Le Mans, France. Commonly known as the Grand Prix of Endurance and Efficiency, race teams have to balance speed against the cars' ability to run for 24 hours without sustaining...

 four times in a row, from 1966
1966 24 Hours of Le Mans
The 1966 24 Hours of Le Mans was the 34th Grand Prix of Endurance, and took place on June 18 and 19 1966. It was also the seventh round of the World Sportscar Championship.-Pre-race:...

 to 1969
1969 24 Hours of Le Mans
The 1969 24 Hours of Le Mans was the 37th Grand Prix of Endurance, and took place on June 14 and 15 1969. It was the eighth round of the 1969 International Championship for Makes....

 (1966 being the Mk II, 1967
1967 24 Hours of Le Mans
The 1967 24 Hours of Le Mans was the 35th Grand Prix of Endurance, and took place on June 10 and 11 1967. It was also the seventh round of the World Sportscar Championship....

 the Mk IV, and 1968
1968 24 Hours of Le Mans
The 1968 24 Hours of Le Mans was the 36th Grand Prix of Endurance, and took place on September 28 and 29 1968. It was the tenth and final round of the World Sportscar Championship....

-1969 the oldest chassis design, the Mk I). It is so far the only racecar built in America
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 (Mk IV only) to win overall at Le Mans (1967 Mk IV).

It was built to win long-distance sports car races
Sports car racing
Sports car racing is a form of circuit auto racing with automobiles that have two seats and enclosed wheels. They may be purpose-built or related to road-going sports cars....

 against Ferrari
Scuderia Ferrari
Scuderia Ferrari is the racing team division of the Ferrari automobile marque. The team currently only races in Formula One but has competed in numerous classes of motorsport since its formation in 1929, including sportscar racing....

 (who won at Le Mans six times in a row from 1960 to 1965). 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, and only one of two cars to have won with the same chassis.) using a Ford engine originally 4.7- liter, enlarged to 4.9-liter (also known as a 5.0) with special alloy Gurney
Dan Gurney
Daniel Sexton Gurney is an American racing driver, race car constructor, and team owner.The son of a Metropolitan Opera star, he was born in Port Jefferson, New York, but moved to California as a teenager...

-Weslake
Weslake
Weslake Research and Development was founded by Harry Weslake, with premises in Rye, East Sussex, England. Weslake was a cylinder head specialist who had been instrumental in modifying the side valve standard engine used in the first SS sports car. He also worked on the larger SS engine: "The...

 cylinder head
Cylinder head
In an internal combustion engine, the cylinder head sits above the cylinders on top of the cylinder block. It closes in the top of the cylinder, forming the combustion chamber. This joint is sealed by a head gasket...

.

The car was named the GT (for Grand Touring
Grand tourer
A grand tourer is a high-performance luxury automobile designed for long-distance driving. The most common format is a two-door coupé with either a two-seat or a 2+2 arrangement....

) 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 liter, 4.7 liter and 7 liter) were used, compared with the Ferrari V12 which displaced 3.0 liter or 4.0 liter.

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-J10)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
Ford GT
The Ford GT is a mid-engine two-seater sports car. Ford Motor Company produced the Ford GT for the 2005 to 2006 model years. The designers drew inspiration from Ford's GT40 race cars of the 1960s.- Development :...

 is a modern homage to the GT40.

History

Henry Ford II
Henry Ford II
Henry Ford II , commonly known as "HF2" and "Hank the Deuce", was the son of Edsel Ford and grandson of Henry Ford...

 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
Enzo Ferrari
Enzo Anselmo Ferrari Cavaliere di Gran Croce OMRI was an Italian race car driver and entrepreneur, the founder of the Scuderia Ferrari Grand Prix motor racing team, and subsequently of the Ferrari car manufacturer...

 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
Ferrari
Ferrari S.p.A. is an Italian sports car manufacturer based in Maranello, Italy. Founded by Enzo Ferrari in 1929, as Scuderia Ferrari, the company sponsored drivers and manufactured race cars before moving into production of street-legal vehicles as Ferrari S.p.A. in 1947...

, 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
Indianapolis 500
The Indianapolis 500-Mile Race, also known as the Indianapolis 500, the 500 Miles at Indianapolis, the Indy 500 or The 500, is an American automobile race, held annually, typically on the last weekend in May at the Indianapolis Motor Speedway in Speedway, Indiana...

 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.

To this end Ford began negotiation with Lotus
Lotus Cars
Lotus Cars is a British manufacturer of sports and racing cars based at the former site of RAF Hethel, a World War II airfield in Norfolk. The company designs and builds race and production automobiles of light weight and fine handling characteristics...

, Lola, and Cooper
Cooper Car Company
The Cooper Car Company was founded in 1946 by Charles Cooper and his son John Cooper. Together with John's boyhood friend, Eric Brandon, they began by building racing cars in Charles' small garage in Surbiton, Surrey, England in 1946...

. Cooper had no experience in GT or prototype and its performances in Formula One
Formula One
Formula One, also known as Formula 1 or F1 and referred to officially as the FIA Formula One World Championship, is the highest class of single seater auto racing sanctioned by the Fédération Internationale de l'Automobile . The "formula" designation in the name refers to a set of rules with which...

 were declining.

Lotus was already a Ford partner for their Indy 500 project. Ford executives already doubted the ability of Lotus to handle this new project. Colin Chapman
Colin Chapman
Anthony Colin Bruce Chapman CBE was an influential British designer, inventor, and builder in the automotive industry, and founder of Lotus Cars....

 probably had similar views as he asked a high price for his contribution and insisted that the car (which became the Lotus Europa
Lotus Europa
The Lotus Europa was a two door mid-engined GT coupé built by Lotus Cars from 1966 to 1975. In 2006 Lotus began production of a totally new, Lotus Elise-derived design, a mid-engined GT coupé named Europa S....

) should be named a Lotus-Ford, an attitude that can be viewed as polite refusal.

The Lola proposal was chosen, since Lola had used a Ford V8 engine in their mid-engined Lola Mk 6 (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 so revving out on the mulsanne straight. However, Eric Broadley
Eric Broadley
Eric Broadley MBE is a British entrepreneur, engineer, and founder and former chief designer of Lola Cars, the motor racing manufacturer and engineering company. He is arguably one of the most influential automobile designers of the post-war period, and over the years Lola has had a hand in many...

, 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 built to Ford. To form the development team, Ford also hired the ex-Aston Martin
Aston Martin
Aston Martin Lagonda Limited is a British manufacturer of luxury sports cars, based in Gaydon, Warwickshire. The company name is derived from the name of one of the company's founders, Lionel Martin, and from the Aston Hill speed hillclimb near Aston Clinton in Buckinghamshire...

 team manager John Wyer
John Wyer
John Wyer was an English automobile racing engineer and team manager. He is mainly associated with cars running in the lightblue and orange livery of his longtime sponsorship partner Gulf Oil.As team manager and team owner, Wyer won the 24 Hours of Le Mans several times...

. Ford Motor Co. engineer Roy Lunn
Roy Lunn
Roy Lunn is an engineer in the automotive industry. He has forty-one years in the design development and production of vehicles and most notably served as the head of engineering at American Motors Corporation from 1971 to 1987....

 was sent to England; he had designed the mid-engined Mustang I
Ford Mustang I
The Ford Mustang I was a small, mid-engined , open two-seater with aluminium body work, that began life as a design exercise and eventually became the progenitor of the famed Ford Mustang...

 concept car powered by a 1.7 liter 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
Harley Copp
Harley F. Copp , was a car designer and automotive safety consultant.A 35 year veteran of the Ford Motor Company, Copp made his name leading the engineering design of various Ford products of the 1950s including the Continental Mark II in 1953 and the Falcon of 1959...

, 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
Slough
Slough is a borough and unitary authority within the ceremonial county of Royal Berkshire, England. The town straddles the A4 Bath Road and the Great Western Main Line, west of central London...

, 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. The first "Ford GT" the GT/101 was unveiled in England on April 1 and soon after exhibited in New York.

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
Nürburgring
The Nürburgring is a motorsport complex around the village of Nürburg, Germany. It features a modern Grand Prix race track built in 1984, and a much longer old North loop track which was built in the 1920s around the village and medieval castle of Nürburg in the Eifel mountains. It is located about...

 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
24 Hours of Le Mans
The 24 Hours of Le Mans is the world's oldest sports car race in endurance racing, held annually since near the town of Le Mans, France. Commonly known as the Grand Prix of Endurance and Efficiency, race teams have to balance speed against the cars' ability to run for 24 hours without sustaining...

, 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 GT40 to victory in the Daytona 2000 in February of 1965. The rest of the season, however, was a disaster.

The experience gained in 1964 and 1965 allowed the 7-liter Mk II to dominate the 24 Hours of Le Mans
24 Hours of Le Mans
The 24 Hours of Le Mans is the world's oldest sports car race in endurance racing, held annually since near the town of Le Mans, France. Commonly known as the Grand Prix of Endurance and Efficiency, race teams have to balance speed against the cars' ability to run for 24 hours without sustaining...

 race in 1966 with a 1-2-3 result. The finish, however, was clouded in controversy: in the final few hours, the Ford GT of New Zealanders Bruce McLaren
Bruce McLaren
Bruce Leslie McLaren , born in Auckland, New Zealand, was a race-car designer, driver, engineer and inventor....

 and Chris Amon
Chris Amon
Christopher Arthur Amon MBE is a former motor racing driver. He was active in Formula One - racing in the 1960s and 1970s - and is widely regarded to be one of the best F1 drivers never to win a championship Grand Prix...

 closely trailed the leading Ford GT driven by Englishman Ken Miles
Ken Miles
Ken Miles was a sports car racing engineer and driver best known for his career in the USA and with American teams on the international scene.-Background:Miles raced motorcycles before he served as a tank sergeant in the British Army in World War...

 and New Zealander Denny Hulme
Denny Hulme
Denis Clive "Denny" Hulme, OBE was a New Zealand racing driver, the 1967 Formula One World Champion for the Brabham team....

. 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 (18.3 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
Kammback
A Kammback is a car body style that derives from the research of the German aerodynamicist Wunibald Kamm in the 1930s. The design calls for a body with smooth contours that continues to a tail that is abruptly cut off. This shape reduces the drag of the vehicle."Kammback" is an American term...

" 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 liter, the same as in Formula One
Formula One
Formula One, also known as Formula 1 or F1 and referred to officially as the FIA Formula One World Championship, is the highest class of single seater auto racing sanctioned by the Fédération Internationale de l'Automobile . The "formula" designation in the name refers to a set of rules with which...

. 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
Lola T70
The Lola T70 was built for sports car racing, popular in the mid to late 1960s. Developed by Lola Cars in 1965 in Great Britain, the T70 was made for endurance racing...

 were allowed, with a maximum of 5.0 L. John Wyer
John Wyer
John Wyer was an English automobile racing engineer and team manager. He is mainly associated with cars running in the lightblue and orange livery of his longtime sponsorship partner Gulf Oil.As team manager and team owner, Wyer won the 24 Hours of Le Mans several times...

's revised 4.7 liter (Bored to 4.9 liter, 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
24 Hours of Le Mans
The 24 Hours of Le Mans is the world's oldest sports car race in endurance racing, held annually since near the town of Le Mans, France. Commonly known as the Grand Prix of Endurance and Efficiency, race teams have to balance speed against the cars' ability to run for 24 hours without sustaining...

 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. In 1969, facing more experienced prototypes and the new yet still unreliable 4.5 L flat-12
Flat-12
A flat-12 is an internal combustion engine in a flat configuration, having 12 cylinders.The flat-12 is wider than a V12...

 powered Porsche 917
Porsche 917
The Porsche 917 is a racecar that gave Porsche its first overall wins at the 24 Hours of Le Mans in 1970 and 1971. Powered by the Type 912 flat-12 engine of 4.5, 4.9, or 5 litres, the 917/30 variant was capable of a 0- time of 2.3 seconds, 0– in 5.3 seconds, and a top speed of over .There are 6...

s, the winners Jacky Ickx
Jacky Ickx
Jacques Bernard "Jacky" Ickx is a Belgian former racing driver who achieved 25 podium finishes in Formula One and six wins in the 24 hours of Le Mans.- Racing career :...

/Jackie Oliver
Jackie Oliver
Keith Jack Oliver, better known as Jackie Oliver, is a British former Formula One driver and team-owner from England...

 managed to beat the remaining 3.0 liter Porsche 908
Porsche 908
The Porsche 908 was a racing car from Porsche, introduced in 1968 to continue the Porsche 906/Porsche 910/Porsche 907 series of models designed under Ferdinand Piech....

 by just a few seconds with the already outdated GT40 (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 times more in later years. In 1970, the revised Porsche 917
Porsche 917
The Porsche 917 is a racecar that gave Porsche its first overall wins at the 24 Hours of Le Mans in 1970 and 1971. Powered by the Type 912 flat-12 engine of 4.5, 4.9, or 5 litres, the 917/30 variant was capable of a 0- time of 2.3 seconds, 0– in 5.3 seconds, and a top speed of over .There are 6...

 dominated, and the GT40 had become obsolete.

Mk I

The Mk I was the original Ford GT40. Early prototypes were powered by 4.3 liter (260 cu.in) V8 engines and production models were powered by 4.7 liter (289 cu.in) engines as used in the Ford Mustang
Ford Mustang
The Ford Mustang is an automobile manufactured by the Ford Motor Company. It was initially based on the second generation North American Ford Falcon, a compact car. Introduced early on April 17, 1964, as a "1964½" model, the 1965 Mustang was the automaker's most successful launch since the Model A...

. Five prototype models were built with roadster
Roadster
A roadster is a two-seat open car with emphasis on sporty handling and without a fixed roof or side weather protection. Strictly speaking a roadster with wind-up windows is a convertible but as true roadsters are no longer made the distinction is now irrelevant...

 bodywork, including the Ford X-1.
The Ford X-1 was a roadster built to contest the Fall 1965 North American Pro Series, a forerunner of CanAm
CanAm
The Canadian-American Challenge Cup or Can-Am, was an SCCA/CASC sports car racing series from 1966 to 1986.-History:Can-Am started out as a race series for Group 7 sports racers with two races in Canada and four races in the United States of America . The series was initially sponsored by Johnson...

, 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
Hewland
Founded by Mike Hewland in 1957, Hewland is a British engineering company specialising in racing-car gearboxes. Hewland was the first company to manufacture a bespoke racing-car gearbox....

 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 gearbox, however the car kept specific features such as its open roof and lightweight chassis. The car went on to win the 12 Hours of Sebring in 1966.

Mk II

The Mk II used the 7.0 liter (427ci) engine from the Ford Galaxie
Ford Galaxie
The Ford Galaxie was a full-size car built in the United States by the Ford Motor Company for model years 1959 through 1974. The name was used for the top models in Ford’s full-size range from 1959 until 1961, in a marketing attempt to appeal to the excitement surrounding the Space Race...

.

For Daytona 1967, two Mk II models (chassis 1016 and 1047) were fitted with Mercury
Mercury (automobile)
Mercury was an automobile marque of the Ford Motor Company launched in 1938 by Edsel Ford, son of Henry Ford, to market entry-level luxury cars slotted between Ford-branded regular models and Lincoln-branded luxury vehicles, similar to General Motors' Buick brand, and Chrysler's namesake brand...

 7.0 liter engines. Mercury is a Ford Motor Company division, and Mercury's 427 was exactly the same engine as Ford's with different logos. A batch of wrongly heat treated input shafts in the transaxles sidelined virtually every Ford in the race, however, and Ferrari won 1-2-3.

Mk III

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 liter engine was detuned to 335 bhp, the shocks 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.

J-car

In an effort to develop a car with better aerodynamics and lighter weight, it was decided to retain the 7 liter engine, but redesign the rest of the car. In order to bring the car more "in house" and lessening partnership with English firms, Ford Advanced Vehicles was sold to John Wyer
John Wyer
John Wyer was an English automobile racing engineer and team manager. He is mainly associated with cars running in the lightblue and orange livery of his longtime sponsorship partner Gulf Oil.As team manager and team owner, Wyer won the 24 Hours of Le Mans several times...

 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
Aluminium
Aluminium or aluminum is a silvery white member of the boron group of chemical elements. It has the symbol Al, and its atomic number is 13. It is not soluble in water under normal circumstances....

 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 2660 lb (1,206.6 kg), 300 lb (136.1 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 LeMans, 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.

Mk IV

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, the Mk IV was totally different from other GT40s, using a specific chassis and specific bodywork. 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 negated most of the weight saving of the honeycomb-panel construction. Dan Gurney often complained about the weight of the Mk IV, since the car was 600 pounds (272.2 kg) heavier than the Ferraris he raced. 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 Mk. IV ran in only two races, the 1967 12 Hours of Sebring and the 1967 24 Hours of Le Mans
1967 24 Hours of Le Mans
The 1967 24 Hours of Le Mans was the 35th Grand Prix of Endurance, and took place on June 10 and 11 1967. It was also the seventh round of the World Sportscar Championship....

 and won both events. The installation of the roll cage was ultimately credited by many with saving the life of Mario Andretti, who crashed violently in a Mk. IV during the 1967 Le Mans, but escaped with minor injuries.
Unlike the earlier Mk.I and III cars, which were entirely British, the Mk.IIs & IVs were built in America, the latter by Shelby
Carroll Shelby International
Carroll Shelby International was formed in 2003 from custom performance vehicle manufacturer Shelby American when, founder and owner, Carroll Shelby took the company public, and additionally forming Shelby Automobiles as a subsidiary from which to continue manufacturing vehicles and parts...

. Le Mans 1967 remains the only truly all-American victory in Le Mans history. A total of 6 Mk IVs were constructed.

Continuation & Replica Models

As the price and the rarity of the Ford GT40 have increased, so has the demand for a continuation model as well as cheaper imitations and replicas of varying quality. There have been several kit car
Kit car
A kit car, also known as a "component car", is an automobile that is available as a set of parts that a manufacturer sells and the buyer then either assembles into a car themselves, or retains a third party to do part or all of the work on their behalf...

s and replicas made that have been inspired by the Ford GT40, as well as a continuation
Continuation car
A continuation car is a special type of replica of a vehicle no longer in production by the original automaker. These cars are built according to the original standards and blueprints, although sometimes the term is also used to refer to vehicles featuring different mechanical parts...

 (exact and licensed replica):
  • GT40/R Competition, United States: authentic GT40 built by Superformance
    Superformance
    Superformance LLC is a small American automobile company that builds, designs, and imports sports cars and replicars. The company was founded as "Superformance International Inc." by Hi-Tech Automotive Ltd. in 1996. Today, Superformance has 15 authorized dealers in the United States and 6...

     and co-designed with Pathfinder Motorsports, it is the only race-version continuation model fully licensed by Safir GT40 Spares (Ltd). These carry continuation chassis numbers from the original cars. Approved for vintage racing by the Historic Sportscar Racing association (HSR), Bobby Rahal's Legends of Motorsports (LOM), and the Sportscar Vintage Racing Association (SVRA), it is distributed by 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.
  • Holman Moody
    Holman Moody
    Holman Moody was an auto racing team, racecar manufacturer, and marine engine manufacturer. The team built virtually all of the factory Ford racecars of the 1950s, 1960s, and 1970s. It owned racecars that competed in NASCAR, drag racing, ocean boat racing, rallys, and sports car racing. The team...

    : GT40 Mark IIs won third at Le Mans in 1966, still manufacture a small number of GT40s from 1966 blueprints

Ford GT

At the 1995 Detroit Auto Show, the Ford GT90
Ford GT90
The Ford GT90 is a concept car manufactured by the Ford Motor Company. It was unveiled in January 1995 at the Detroit Auto Show as "the world's mightiest supercar"...

 concept was shown and at the 2002 show, a new GT40 Concept was unveiled by Ford.

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
Saleen
Saleen, Incorporated, commonly known as Saleen, was an American manufacturer of high-performance sports cars and high-performance automotive parts in Troy, Michigan, formerly based in Irvine, California...

 at their Saleen Special Vehicles
Saleen Special Vehicles
Saleen Special Vehicles or SSV, was a Saleen-owned and Saleen-operated small-volume, specialty vehicle assembly plant located 1225 East Maple Road in Troy, Michigan. The building housing this facility was previously a Stanley door-manufacturing facility prior to renovations performed by Saleen to...

 plant in Troy, Michigan
Troy, Michigan
Troy is a city in Oakland County in the U.S. state of Michigan, and is a suburb of Detroit. The population was 80,980 at the 2010 census, making it the 11th-largest city in Michigan by population, and the largest city in Oakland County...

, USA.

A British company, Safir Engineering
Safir Engineering
Safir Engineering is a British racecar engineering firm.In 1975, they purchased the Token RJ02 Formula One car, renamed it the "Safir" and raced it in the 1975 Race of Champions and BRDC International Trophy....

, 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
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 company called Safir GT40 Spares based in Ohio
Ohio
Ohio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus...

. 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. It is rumored that Safir GT40 Spares asked $40 million dollars for the rights, but this has never been verified. The partners at Safir GT40 Spares state they have correspondence from Ford declining Safir's $8 million offer. 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 for use by the Pathfinder Motorsports GT40/R Competition, which is built by Hi-Tech in South Africa, which also builds street version models of the GT40.

Le Mans 24 Hour victories

Le Mans 24 Hour victories
|Distance Speed
Year Car Drivers km mph km/h
1966
1966 24 Hours of Le Mans
The 1966 24 Hours of Le Mans was the 34th Grand Prix of Endurance, and took place on June 18 and 19 1966. It was also the seventh round of the World Sportscar Championship.-Pre-race:...

Mk II Chris Amon
Chris Amon
Christopher Arthur Amon MBE is a former motor racing driver. He was active in Formula One - racing in the 1960s and 1970s - and is widely regarded to be one of the best F1 drivers never to win a championship Grand Prix...

, Bruce McLaren
Bruce McLaren
Bruce Leslie McLaren , born in Auckland, New Zealand, was a race-car designer, driver, engineer and inventor....

4843.09 130.98 210.80
1967
1967 24 Hours of Le Mans
The 1967 24 Hours of Le Mans was the 35th Grand Prix of Endurance, and took place on June 10 and 11 1967. It was also the seventh round of the World Sportscar Championship....

Mk IV Dan Gurney
Dan Gurney
Daniel Sexton Gurney is an American racing driver, race car constructor, and team owner.The son of a Metropolitan Opera star, he was born in Port Jefferson, New York, but moved to California as a teenager...

, A. J. Foyt
A. J. Foyt
Anthony Joseph Foyt, Jr., or as he is universally known as in motorsports circles, A. J. Foyt , is a retired American automobile racing driver. He raced in numerous genres of motorsports. His open wheel racing includes USAC Champ cars and midget cars. He raced stock cars in NASCAR and USAC. He won...

5232.9 135.48 218.03
1968
1968 24 Hours of Le Mans
The 1968 24 Hours of Le Mans was the 36th Grand Prix of Endurance, and took place on September 28 and 29 1968. It was the tenth and final round of the World Sportscar Championship....

Mk I Pedro Rodríguez
Pedro Rodriguez (racing driver)
Pedro Rodríguez was a Mexican Grand Prix motor racing driver. He was born in Mexico City and was the older brother of Ricardo Rodríguez.-Career:...

, Lucien Bianchi
Lucien Bianchi
Lucien Bianchi , born Luciano Bianchi, was a Belgian racing driver who raced for the Cooper, ENB, UDT Laystall and Scuderia Centro Sud teams in Formula One...

4452.88 115.29 185.54
1969
1969 24 Hours of Le Mans
The 1969 24 Hours of Le Mans was the 37th Grand Prix of Endurance, and took place on June 14 and 15 1969. It was the eighth round of the 1969 International Championship for Makes....

Mk I Jacky Ickx
Jacky Ickx
Jacques Bernard "Jacky" Ickx is a Belgian former racing driver who achieved 25 podium finishes in Formula One and six wins in the 24 hours of Le Mans.- Racing career :...

, Jackie Oliver
Jackie Oliver
Keith Jack Oliver, better known as Jackie Oliver, is a British former Formula One driver and team-owner from England...

4997.88 129.40 208.25

Further reading

  • Auto Passion n°49 July 1991 (in French)
  • La Revue de l'Automobile historique n°7 March/April 2001 (in French)
  • Ford: The Dust and the Glory/A motor racing history by Leo Levine/1968
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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