About The Ford GT40 MKIV: This victory was no accident. Ford made sure of that. It was specifically, painstakingly designed for endurance, designed for speed…designed to win. Each element of the MKIV was totally different from other GT40s, starting with where it was made. The MKIV was built in the United States, unlike its predecessors the MKI-III cars which were all built in Europe. A company called Kar Kraft built the all-new J series chassis and newly designed long, streamlined bodywork. The MKIV quickly became the most radical and American variant of all the GT40s. Other modifications were made as well. A NASCAR-style, steel-tube roll cage was added as a direct result of beloved racer Ken Miles’ tragic and ultimately fatal accident. Though it was significantly safer, the roll cage was incredibly heavy. To top it off, driver Dan Gurney was 6' 4" - too tall to fit in the standard GT40. So, the team built the car body around him, lowering the position of the driver’s seat and making a "bubble" shaped piece for the roof of the car This would become known as the "Gurney Bubble" and would be applied to all MKIVs. This particular beauty, the red MKIV #1, was on the J5 Chassis. Despite its skilled drivers Dan Gurney and A.J. Foyt, the red #1 was written off and thought to be least likely to win. Dan Gurney often complained about its weight. It was a massive 600 pounds heavier than their archrival, the Ferrari 330 P4. During practice at Le Mans in 1967, Gurney developed a strategy in an effort to preserve the brakes - highly stressed under the additional weight of the car. He backed completely off the throttle several hundred yards before the approach to the Mulsanne hairpin (a well-known high-crash zone) virtually coasting into the braking area. This technique (also adopted by his co-driver A.J. Foyt) saved the brakes but increased the car's recorded lap times
