This page provides a detailed comparison of the specifications for the Allis Chalmers H3 and the Hart-Parr Old Reliable 30-60.
| Allis Chalmers H3 | Hart-Parr Old Reliable 30-60 | |
|---|---|---|
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| Engine | ||
| Engine Manufacturer | Allis Chalmers | Hart-Parr |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Gasoline | Kerosene |
| Engine Induction Type | Naturally Aspirated | Natural |
| Engine Cylinders | 4 | 2 |
| Engine Displacement Value | 149 ci (2.4 L) | 2356 ci (38.6 L) |
| Engine Rated Rpm | 1650 | 300 |
| Transmission | ||
| Transmission Type | Two-Speed Power Shift, Mechanical Shuttle | Gear |
| Transmission Forward Gears | 8 | 1 |
| Transmission Reverse Gears | 2 | 1 |
| Dimensions | ||
| Length Value | 108.75 | 200 |
| Width Value | - | 106 |
| Operating Weight Value | 7395 lb (3354 kg) | 20100 lb (9117 kg) |
| Miscellaneous | ||
| Chassis | - | 4x2 |
| Drive Type | - | 2WD |
| Hydraulic System Type | Open Center | - |
| Starter Type | Electric | - |
