Oliver 990

The Oliver 990 is a standard-tread farm tractor produced from 1958 to 1961 as part of the 900 Series. It was built in Charles City, Iowa, USA, and originally sold for $8,200 in 1961. The 990 was also marketed as the Massey Ferguson 98 with different sheet metal, paint, and seat. It features a General Motors 3.5L 3-cylinder two-cycle diesel engine with a mechanical blower, producing approximately 93.4 hp estimated engine power. The tractor has a 6-speed gear transmission with 2 reverse gears and a dry disc clutch. It offers power steering, disc brakes, and an open operator station. The PTO is an independent rear 540 rpm type, optional on this model. The tractor weighs 11,000 lbs and has a wheelbase of nearly 80 inches. It is capable of pulling 6 plows and has tested drawbar power of about 61.46 hp.