This page provides a detailed comparison of the specifications for the Allis Chalmers 8550 and the Hart-Parr Old Reliable 30-60.
| Allis Chalmers 8550 | Hart-Parr Old Reliable 30-60 | |
|---|---|---|
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| Engine | ||
| Engine Manufacturer | Allis Chalmers | Hart-Parr |
| Engine Model | 6120T | - |
| Engine Cooling Type | Liquid-Cooled | Liquid-cooled |
| Engine Fuel Type | Diesel | Kerosene |
| Engine Induction Type | Turbocharged | Natural |
| Engine Cylinders | 6 | 2 |
| Engine Displacement Value | 731 ci (12.0 L) | 2356 ci (38.6 L) |
| Engine Rated Rpm | 2500 | 300 |
| Engine Power Output Value | 300 hp (223.7 kW) | - |
| Transmission | ||
| Transmission Type | Partial Power Shift | Gear |
| Transmission Forward Gears | 20 | 1 |
| Transmission Reverse Gears | 4 | 1 |
| Dimensions | ||
| Length Value | 285 | 200 |
| Width Value | 95.5 | 106 |
| Operating Weight Value | 27040 lb (12265 kg) | 20100 lb (9117 kg) |
| Miscellaneous | ||
| Chassis | 4x4 Articulated 4WD | 4x2 |
| Drive Type | 4WD | 2WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Type | Three-Point Hitch | - |
| Hitch Category | IV/III | - |
| Hydraulic System Type | Closed Center | - |
| Operator Station Type | Acousta Cab II with heat and air-conditioning | - |
| Starter Type | Electric | - |
