This page provides a detailed comparison of the specifications for the Allis Chalmers UC and the Hart-Parr Old Reliable 30-60.
| Allis Chalmers UC | Hart-Parr Old Reliable 30-60 | |
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| Engine | ||
| Engine Manufacturer | Allis-Chalmers | Hart-Parr |
| Engine Cooling Type | - | Liquid-cooled |
| Engine Fuel Type | Gasoline | Kerosene |
| Engine Induction Type | Naturally Aspirated | Natural |
| Engine Cylinders | 4 | 2 |
| Engine Displacement Value | 302 ci (4.9 L) | 2356 ci (38.6 L) |
| Engine Rated Rpm | 1200 | 300 |
| Engine Power Output Value | 31 hp (23.1 kW) | - |
| Transmission | ||
| Transmission Type | Non-synchronized gear | Gear |
| Transmission Forward Gears | 4 | 1 |
| Transmission Reverse Gears | 1 | 1 |
| Dimensions | ||
| Length Value | 145 | 200 |
| Width Value | 81 | 106 |
| Operating Weight Value | 5710 lb (2590 kg) | 20100 lb (9117 kg) |
| Miscellaneous | ||
| Chassis | 4x2 2WD | 4x2 |
| Drive Type | 2WD | 2WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
