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Willys Quad 1940

The Willys Quad 1940 holds a significant place in military history as it was the original prototype designed for the US Army during World War II. The vehicle was engineered to meet the Army’s demand for a durable, versatile and rugged utility vehicle that could navigate any terrain, and it served as the basis for the later Willys MA 1941.

The Willys Quad 1940 was a result of an Army competition to create a standardized four-wheel-drive vehicle that could be used for reconnaissance, command, and general transport duties. In response, Willys-Overland Motors, Inc. designed and manufactured the Quad 1940, which impressed the Army with its off-road capabilities, low weight, and simplicity of design.

As the prototype for the Willys MA 1941, the Quad 1940 was a critical stepping stone in the development of the iconic Jeep that became an essential vehicle for the US Army during World War II. The Willys MA 1941 incorporated many improvements over the Quad 1940, including a redesigned suspension, stronger frame, and improved engine, but the basic design elements that made the Quad 1940 so successful remained intact.

Engine Type

The Willys Quad 1940 was powered by a 2.2-liter four-cylinder engine that produced 60 horsepower. The engine was capable of reaching a top speed of around 65 mph.

Transmission Type

The Willys Quad 1940 had a three-speed manual transmission with a floor-mounted shifter. The transmission was synchronized in second and third gears, which made shifting easier.

Transfer Case

The Willys Quad 1940 had a two-speed transfer case that allowed the driver to switch between two-wheel and four-wheel drive. The transfer case also had a low-range gear for increased torque in off-road situations.

Front Axle

The Willys Quad 1940 had a Dana 25 front axle with a 4.88:1 gear ratio. The front axle was also equipped with locking hubs that allowed the driver to disengage the front wheels when not in four-wheel drive.

Rear Axle

The Willys Quad 1940 had a Dana 23-2 rear axle with a 4.88:1 gear ratio. The rear axle was also equipped with a differential lock that allowed both rear wheels to turn at the same speed.

Other Features

The Willys Quad 1940 had a 80-inch wheelbase and a ground clearance of 8.75 inches. It had a fuel capacity of 15 gallons and a range of around 300 miles. The vehicle was also equipped with a 6-volt electrical system and a 9-inch drum brake system. One notable difference between the Quad and the MA was the Quad’s use of a two-piece windshield, while the MA had a one-piece windshield.

Willys MA 1941

Willys MB (1941-1945)