• In 1937 Willys Overland Motors Inc. introduced the Willys model 37 which evolved into the 1941 Americar 441. The model 37 featured an economical 4-cylinder engine, a wheelbase of 100 inches, a more streamlined body design than earlier models, and a bullnose front hood. 
• The 1938 model was essentially the 1937 model. 
• In 1939 the wheelbase was extended to 102 inches and there were two front hood and fenders styles (¹Willys and ¹Overland). The original head was redesigned to give a higher compression ratio. Horsepower was increased from 48 to 61BHP. 
• The front hood and fenders were again remodeled in the ¹1940 model year. 
• 1941 saw a change in wheelbase to 104 inches, a single grill and a slight increase in horsepower.

In the early sixties, drag racers realized that the ¹Willys 440 and ¹441 Americar with its short wheelbase, lightweight, and high center of gravity necessary for traction, would make the perfect car for the popular ¹Gas Coupe and Sedan Class. Hundreds were ¹converted and ¹raced at every drag strip throughout Canada and the United States.