This page provides a detailed comparison of the specifications for the Allis Chalmers 4W-220 and the John Deere 8020.
| Allis Chalmers 4W-220 | John Deere 8020 | |
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| Engine | ||
| Engine Manufacturer | Allis Chalmers | Detroit Diesel |
| Engine Model | 670 HI | 671E |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Diesel | Diesel |
| Engine Induction Type | Turbocharged intercooled | Natural aspiration |
| Engine Cylinders | 6 | 6 |
| Engine Displacement Value | 426 ci (7.0 L) | 425 ci (7.0 L) |
| Engine Rated Rpm | 2400 | 2100 |
| Engine Power Output Value | 220 hp (164.1 kW) | 215 hp (160.3 kW) |
| Transmission | ||
| Transmission Type | Two-speed power shift | Gear |
| Transmission Forward Gears | 20 | 8 |
| Transmission Reverse Gears | 4 | 2 |
| Dimensions | ||
| Length Value | 129.4 | 238 |
| Width Value | - | 96 |
| Operating Weight Value | 21475 lb (9741 kg) | 19700 lb (8936 kg) |
| Miscellaneous | ||
| Chassis | 4x4 articulated 4WD | 4x4 4WD |
| Drive Type | 4WD | 4WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Category | III | - |
| Hitch Position | Rear | - |
| Hydraulic System Type | Closed center load-sensing | - |
| Operator Station Type | Cab (standard) | Open operator station |
| Starter Type | Electric | Electric |
