
Allis ChalmersModel A
Allis Chalmers 170
Agricultural
- power
- Not recorded
- displacement
- 226 ci
- Cylinders
- 4
- Forward gears
- 8
Head to head · Agricultural

Agricultural

Crawler
How they compare
170 is in the 20th percentile; HD7 is in the 18th · 1,083 models
170 is in the 31st percentile; HD7 is in the 8th · 1,130 models
170 is in the 16th percentile; HD7 is in the 3rd · 972 models
170 is in the 18th percentile; HD7 is in the 65th · 971 models
Full comparison
| Spec | Allis Chalmers 170 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Allis Chalmers | Same |
| Model | 170 | HD7 | — |
| Category | Agricultural | Crawler, Agricultural | — |
| Spec | Allis Chalmers 170 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Manufacturer | Allis-Chalmers | General Motors | — |
| Model | Not recorded | Mar-71 | — |
| Rated RPM | 1,800RPM | 1,500RPM | ▲ 170+300 RPM · +20% |
| Cylinders | 4 | 3 | ▲ 170+1 · +33% |
| Displacement | 226ci | 213ci | ▲ 170+13 ci · +6% |
| Bore | 4in | 4.3in | ▲ HD7+0.3 in · +7% |
| Stroke | 4.1in | 5in | ▲ HD7+0.9 in · +22% |
| Spec | Allis Chalmers 170 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Type | Two-speed power shift | Sliding Gear | — |
| Spec | Allis Chalmers 170 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Length | 150in | 128in | ▲ 170+22 in · +17% |
| Width | 78in | 81in | ▲ HD7+3 in · +4% |
| Height | 58.7in | 69in | ▲ HD7+10.3 in · +18% |
| Operating Weight | 5,720lb | 14,000lb | ▲ HD7+8,280 lb · +145% |
| Spec | Allis Chalmers 170 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| System Type | Open | Not recorded | — |
| Steering Type | Hydraulic power assist | Not recorded | — |
| Spec | Allis Chalmers 170 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Type | Live | Not recorded | — |
| Speed 1 | 540rpm | Not recorded | — |
| Spec | Allis Chalmers 170 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Rear Tire Size | 16.9x28 | Not recorded | — |
| Spec | Allis Chalmers 170 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Not recorded | — |
| Hitch Category | II | Not recorded | — |
| Hitch Position | Rear | Not recorded | — |
| Spec | Allis Chalmers 170 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | Crawler | — |
| Drive Type | 2WD | Track | — |
| Steering Type | Hydraulic power assist | Not recorded | — |
| Brake Type | Differential mechanical contracting band and disc | Not recorded | — |
| Spec | Allis Chalmers 170 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
| Spec | Allis Chalmers 170 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Coolant | 3.8gal | 5.8gal | ▲ HD7+2 gal · +53% |
| Spec | Allis Chalmers 170 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Type | Open operator station | Not recorded | — |
Category context