UtilityPerformance profile
Oliver 990
The Oliver 990 is a utility tractor that was made from 1958 to 1961. It's a strong machine, weighing 11,000 pounds, which is very heavy compared to other tractors. This tractor has two-wheel drive and power steering, making it easier to control. The Oliver 990 has a diesel engine made by General Motors. It has three cylinders and uses a blower to help it run better. The engine is pretty powerful, giving 61.4 horsepower, which is above average. It has a 6-speed gear transmission for going forward and 2 speeds for going backward. The tractor has big agricultural tires, with 18-inch ones in front and 26-inch ones in back. It also has a PTO that can run at 540 rpm, which is good for using different tools.
ManufacturerOliverPower61.4 hpEngine3-cylTransGear
Quick specs
- Category
- Utility
- Engine Power Output
- 61hp
- Operating Weight
- 11,000 lb
- Transmission
- Gear
At a glance
How the 990 compares
vs. Utility medianDistribution
Engine Power (hp)
Across all Utility tractors
61.4 hp · 56th
This model
9
Median 55 hp
177
This modelUtility tractorsMediann = 5,383
The 990 ranks at the 56th percentile for engine power among recorded utility tractors.
Overview
About the Oliver 990
The Oliver 990 is a utility tractor that was made from 1958 to 1961. It's a strong machine, weighing 11,000 pounds, which is very heavy compared to other tractors. This tractor has two-wheel drive and power steering, making it easier to control. The Oliver 990 has a diesel engine made by General Motors. It has three cylinders and uses a blower to help it run better. The engine is pretty powerful, giving 61.4 horsepower, which is above average. It has a 6-speed gear transmission for going forward and 2 speeds for going backward. The tractor has big agricultural tires, with 18-inch ones in front and 26-inch ones in back. It also has a PTO that can run at 540 rpm, which is good for using different tools.
Full specifications
Every recorded spec
General
| Manufacturer | Oliver |
|---|---|
| Model | 990 |
| Category | Utility tractor |
| Type | 4x2 2WD |
| Years built | 1958–1961 |
| Operating weight | 11,000lb |
Engine
| Make | General Motors |
|---|---|
| Model | Mar-71 |
| Power | 61.4hp |
| Cylinders | 3 |
| Displacement | 213ci |
| Bore | 4.25in |
| Stroke | 5in |
Transmission
| Type | Gear |
|---|---|
| Forward gears | 6 |
| Reverse gears | 2 |
Chassis & drive
| Chassis | 4x2 2WD |
|---|---|
| Drive | 2WD |
| Steering | Power |
| Brakes | Disc |
| Cab | Open |
Power take-off
| Rear PTO | Independent |
|---|---|
| PTO speed | 540rpm |
Dimensions
| Operating weight | 11,000lb |
|---|
Head to head
990 vs. Utility median
How the Oliver 990 compares to other Utility tractors
| Spec | This model | Utility median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 61.4 hp | 55 hp | +12% | 56th |
| Engine Displacement | 213 ci | 183 ci | +16% | 59th |
| Cylinders | 3 | 4 | -25% | 23rd |
| Forward Gears | 6 | 12 | -50% | 11th |
| Operating Weight | 11,000 lb | 5,303 lb | +107% | 88th |
Medians and percentiles are computed from the utility tractors in our database with a recorded value for each spec (sample sizes 4,941–5,720 models).
Compare to tractors with similar specs
Commonly compared Oliver tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Oliver 1365 | 59 hp | 4,410 lb | 1971–1975 | Compare → |
| Oliver OC-18 | 52.76 hp | 32,500 lb | — | Compare → |
| Oliver 1465 | 77 hp | 6,700 lb | — | Compare → |
| Oliver 550 | 44.31 hp | 3,730 lb | 1958–1975 | Compare → |
| Oliver Super 55 | 35.91 hp | 3,400 lb | 1954–1958 | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Barreiros R-500 B | 60 hp | — | — | Compare → |
| Belarus 5011 | 60 hp | — | — | Compare → |
| Belarus 5011L | 60 hp | — | — | Compare → |
| Allis Chalmers D17 | 63 hp | 4,675 lb | 1957–1967 | Compare → |
| Allis Chalmers 6060 | 63.21 hp | 6,465 lb | 1980–1984 | Compare → |
Explore
Oliver siblings
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Similar-spec models
Gallery
Oliver 990 photos
FAQ
Common questions
When was the Oliver 990 made?
The Oliver 990 was manufactured from 1958 to 1961.
What is the operating weight of the Oliver 990?
In working trim, the Oliver 990 comes in at roughly 11,000 lb.
Which transmission does the Oliver 990 use?
The Oliver 990 is equipped with a Gear transmission with 6 forward gears.
What is the engine power output of the Oliver 990?
Rated engine output for the Oliver 990 is 61.4 hp, delivered by a 3-cylinder engine. The engine displaces 213 ci.
How do I maintain a Oliver 990?
Routine service for the Oliver 990 covers engine oil and filter changes, hydraulic and coolant level checks, air filter cleaning, and scheduled inspections. Refer to the manufacturer's maintenance schedule for exact intervals.