Oliver
990
Farm tractor · 1958–1961 · 93 hp
Oliver990
The Oliver 990 is a farm tractor manufactured from 1958 to 1961. It features a General Motors 3-71 engine, and power steering. The transmission is a gear type with 6 forward and 2 reverse.
Engine
| Engine | General Motors 3-71 |
|---|---|
| Fuel Type | blower diesel |
| Cylinders | 3 |
| Cooling | liquid-cooled |
| Displacement | 213 ci (3.5 L) |
| Bore | 4.25 in (108 mm) |
| Stroke | 5 in (127 mm) |
| Compression Ratio | 17 |
| Power PTO | 84.1 hp (62.7 kW) |
| Power Drawbar | 61.46 hp (45.8 kW) |
| Power Belt | 84.1 hp (62.7 kW) |
| Starter Volts | 12 |
| Manufacturer | General Motors |
| Rated | 1,800 RPM |
Transmission
| Transmission Type | gear |
|---|---|
| Gears | 6 forward and 2 reverse |
| Clutch | dry disc |
| Available Options | 6-speed gear |
PTO
| Rear Type | independent optional |
|---|
Dimensions
| Wheelbase | 79.88 in (202 cm) |
|---|---|
| Front Tread | 59.9 in (152 cm) |
| Rear Tread | 66 in (167 cm) |
Weight
| Weight | 11,000 lbs (4,989 kg) |
|---|
Tires & Tracks
| Front Ag | 7.50-18 |
|---|---|
| Rear Ag | 18-26, 14-34, 15-34 |
Steering
| Type | power |
|---|
Nebraska Tests
NTTLTest #661
July 7 to 18, 1958Nebraska Tractor Test
Drawbar
77.41HP