Allis ChalmersModel A
Allis Chalmers D17
Row Crop
- power
- 63 hp
- displacement
- 226 ci
- Cylinders
- 4
- Forward gears
- 8
Head to head · Row Crop
Allis Chalmers D17 vs Oliver 990
Allis ChalmersAllis Chalmers D17
vs
OliverOliver 990
How they compare
Headline specs vs. the whole Row Crop
Engine Power
▲ D17 higher · +1.6 hp (+3%)D1763 hp
99061.4 hp
Median Row Crop Tractor138 hp
D17 is in the 9th percentile; 990 is in the 9th · 1,206 models
Engine Displacement
▲ D17 higher · +13 ci (+6%)D17226 ci
990213 ci
Median Row Crop Tractor391 ci
D17 is in the 11th percentile; 990 is in the 10th · 1,409 models
Cylinders
▲ D17 higher · +1 (+33%)D174
9903
Median Row Crop Tractor6
D17 is in the 17th percentile; 990 is in the 2nd · 1,417 models
Forward Gears
▲ D17 higher · +2 (+33%)D178
9906
Median Row Crop Tractor16
D17 is in the 16th percentile; 990 is in the 11th · 1,200 models
D17 (A)990 (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers D17 | Oliver 990 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Oliver | — |
| Model | D17 | 990 | — |
| Category | Row Crop | Utility, Standard Tread | — |
Engine
| Spec | Allis Chalmers D17 | Oliver 990 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | General Motors | — |
| Model | Allis-Chalmers 3.7L 4-cyl gasoline | Mar-71 | — |
| Power Output | 63hp | 61.4hp | ▲ D17+1.6 hp · +3% |
| Rated RPM | 1,650RPM | 1,800RPM | ▲ 990+150 RPM · +9% |
| Cylinders | 4 | 3 | ▲ D17+1 · +33% |
| Displacement | 226ci | 213ci | ▲ D17+13 ci · +6% |
| Bore | 4in | 4.3in | ▲ 990+0.3 in · +7% |
| Stroke | 4.5in | 5in | ▲ 990+0.5 in · +11% |
Transmission
| Spec | Allis Chalmers D17 | Oliver 990 | Difference |
|---|---|---|---|
| Type | Partial Power Shift | Gear | — |
Dimensions & Weight
| Spec | Allis Chalmers D17 | Oliver 990 | Difference |
|---|---|---|---|
| Length | 140in | Not recorded | — |
| Width | 76.4in | Not recorded | — |
| Height | 80.7in | Not recorded | — |
| Operating Weight | 4,675lb | 11,000lb | ▲ 990+6,325 lb · +135% |
Hydraulics
| Spec | Allis Chalmers D17 | Oliver 990 | Difference |
|---|---|---|---|
| System Type | Open Center | Not recorded | — |
| Steering Type | Manual | Power | — |
Power Take-off (PTO)
| Spec | Allis Chalmers D17 | Oliver 990 | Difference |
|---|---|---|---|
| Type | Live | Independent | — |
| Speed 1 | 540rpm | 540rpm | Same |
Hitch & Towing
| Spec | Allis Chalmers D17 | Oliver 990 | Difference |
|---|---|---|---|
| Hitch Type | Snap-Coupler | Not recorded | — |
| Hitch Category | II | Not recorded | — |
| Hitch Position | Rear | Not recorded | — |
Chassis & Drive
| Spec | Allis Chalmers D17 | Oliver 990 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x2 2WD | Same |
| Drive Type | 2WD | 2WD | Same |
| Steering Type | Manual | Power | — |
| Brake Type | Not recorded | Disc | — |
Electrical
| Spec | Allis Chalmers D17 | Oliver 990 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers D17 | Oliver 990 | Difference |
|---|---|---|---|
| Coolant | 3.6gal | Not recorded | — |
Operator Station
| Spec | Allis Chalmers D17 | Oliver 990 | Difference |
|---|---|---|---|
| Type | Open operator station | Open | — |
Category context
Both models against the field
Engine Power
median 138 hpA · 9th percentile (63 hp)B · 9th percentile (61.4 hp)
Engine Displacement
median 391 ciA · 11th percentile (226 ci)B · 10th percentile (213 ci)
Cylinders
median 6A · 17th percentile (4)B · 2nd percentile (3)
Forward Gears
median 16A · 16th percentile (8)B · 11th percentile (6)
Operating Weight
median 12,307 lbA · 7th percentile (4,675 lb)B · 39th percentile (11,000 lb)
A · D17B · 990Median Row Crop Tractor