David Brown produced its 3800 Selectamatic farm tractor model From 1968 Until 1971 in United states this exact model was priced at 4,000 USD with a Open operating station cabin. Talking dimensions and weight, this model weighs 3885 lbs or 1762 kg has 64.5 inches [163 cm] (min) of width, 115.625 inches [293 cm] of length while maintaining a wheelbase of 76 inches [193 cm] the front tread is about 48 to 72 inches while the rear tread is 48 to 76 inches . This tractor can fit ag tires of 14.9/13-24 front and 14.9/13-24 back . This David Brown 3800 Selectamatic is powerd by a gasoline engine it has 146.1 ci or 2.4 L 3 cylinders and has a torque of 115 lb-ft or 155.9 Nm at 1400 (rpm) the fuel tank capacity is 9.5 gal or 36.0 L. This machine has 4x2 2WD wheel drive system,12 forward and 4 reverse transmission system.