Allis ChalmersModel A
Allis Chalmers HD7
Crawler
- power
- Not recorded
- displacement
- 213 ci
- Cylinders
- 3
- Forward gears
- 4
Head to head · Crawler
Allis Chalmers HD7 vs County Super 4
Image not recorded
CountyModel B
County Super 4
Utility
- power
- Not recorded
- displacement
- 220 ci
- Cylinders
- 4
- Forward gears
- 8
Allis ChalmersAllis Chalmers HD7
vs
CountyCounty Super 4
How they compare
Headline specs vs. the whole Crawler
Engine Displacement
▲ Super 4 higher · +7 ci (+3%)HD7213 ci
Super 4220 ci
Median Crawler Tractor468 ci
HD7 is in the 29th percentile; Super 4 is in the 30th · 191 models
Cylinders
▲ Super 4 higher · +1 (+33%)HD73
Super 44
Median Crawler Tractor6
HD7 is in the 10th percentile; Super 4 is in the 33rd · 192 models
Forward Gears
▲ Super 4 higher · +4 (+100%)HD74
Super 48
Median Crawler Tractor10
HD7 is in the 16th percentile; Super 4 is in the 41st · 179 models
Operating Weight
▲ HD7 higher · +2,200 lb (+19%)HD714,000 lb
Super 411,800 lb
Median Crawler Tractor23,320 lb
HD7 is in the 43rd percentile; Super 4 is in the 39th · 173 models
HD7 (A)Super 4 (B)Median Crawler Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers HD7 | County Super 4 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | County | — |
| Model | HD7 | Super 4 | — |
| Category | Crawler, Agricultural | Utility | — |
Engine
| Spec | Allis Chalmers HD7 | County Super 4 | Difference |
|---|---|---|---|
| Manufacturer | General Motors | Ford | — |
| Model | Mar-71 | 3.6L 4-cyl diesel | — |
| Rated RPM | 1,500RPM | 1,600RPM | ▲ Super 4+100 RPM · +7% |
| Cylinders | 3 | 4 | ▲ Super 4+1 · +33% |
| Displacement | 213ci | 220ci | ▲ Super 4+7 ci · +3% |
| Bore | 4.3in | 3.9in | ▲ HD7+0.4 in · +10% |
| Stroke | 5in | 4.5in | ▲ HD7+0.5 in · +11% |
Transmission
| Spec | Allis Chalmers HD7 | County Super 4 | Difference |
|---|---|---|---|
| Type | Sliding Gear | 8-speed | — |
Dimensions & Weight
| Spec | Allis Chalmers HD7 | County Super 4 | Difference |
|---|---|---|---|
| Length | 128in | 146in | ▲ Super 4+18 in · +14% |
| Width | 81in | Not recorded | — |
| Height | 69in | Not recorded | — |
| Operating Weight | 14,000lb | 11,800lb | ▲ HD7+2,200 lb · +19% |
Hydraulics
| Spec | Allis Chalmers HD7 | County Super 4 | Difference |
|---|---|---|---|
| System Type | Not recorded | Open Center | — |
| Steering Type | Not recorded | Power | — |
Tires
| Spec | Allis Chalmers HD7 | County Super 4 | Difference |
|---|---|---|---|
| Front Tire Size | Not recorded | 16.9-30 | — |
| Rear Tire Size | Not recorded | 16.9-30 | — |
Chassis & Drive
| Spec | Allis Chalmers HD7 | County Super 4 | Difference |
|---|---|---|---|
| Chassis Type | Crawler | 4x4 4WD | — |
| Drive Type | Track | 4WD | — |
| Steering Type | Not recorded | Power | — |
Electrical
| Spec | Allis Chalmers HD7 | County Super 4 | Difference |
|---|---|---|---|
| Starter Type | Electric | Not recorded | — |
Capacities
| Spec | Allis Chalmers HD7 | County Super 4 | Difference |
|---|---|---|---|
| Coolant | 5.8gal | 3.8gal | ▲ HD7+2 gal · +53% |
Category context
Both models against the field
Engine Displacement
median 468 ciA · 29th percentile (213 ci)B · 30th percentile (220 ci)
Cylinders
median 6A · 10th percentile (3)B · 33rd percentile (4)
Forward Gears
median 10A · 16th percentile (4)B · 41st percentile (8)
Operating Weight
median 23,320 lbA · 43rd percentile (14,000 lb)B · 39th percentile (11,800 lb)
Length
median 146 inA · 33rd percentile (128 in)B · 50th percentile (146 in)
A · HD7B · Super 4Median Crawler Tractor