Early models of the Ford 1120 tractor featured a two-cylinder Shibaura diesel engine with a displacement of 43.1 cubic inches. Later models offered a three-cylinder Shibaura diesel engine. The three-cylinder engine had a displacement of 54 cubic inches and offered 12.5 horsepower.
The Ford 1120 tractor featured a hydrostatic transmission with 12 gears. The tractor had nine forward and three reverse speeds.
The Ford 1120 tractor was offered in both two-wheel drive with four-wheel drive versions. The tractor weighed 1,338 pounds and had a three-point hitch.