This page provides a detailed comparison of the specifications for the Ford 771 and the Hart-Parr Old Reliable 30-60.
| Ford 771 | Hart-Parr Old Reliable 30-60 | |
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| Engine | ||
| Engine Manufacturer | Ford | Hart-Parr |
| Engine Cooling Type | - | Liquid-cooled |
| Engine Fuel Type | Gasoline | Kerosene |
| Engine Induction Type | Natural | Natural |
| Engine Cylinders | 4 | 2 |
| Engine Displacement Value | 134 ci (2.2 L) | 2356 ci (38.6 L) |
| Engine Rated Rpm | 2200 | 300 |
| Engine Power Output Value | 48 hp (36.1 kW) | - |
| Transmission | ||
| Transmission Type | Full power shift | Gear |
| Transmission Forward Gears | 10 | 1 |
| Transmission Reverse Gears | 2 | 1 |
| Dimensions | ||
| Length Value | 132.1 | 200 |
| Width Value | - | 106 |
| Operating Weight Value | 3400 lb (1542 kg) | 20100 lb (9117 kg) |
| Miscellaneous | ||
| Chassis | - | 4x2 |
| Drive Type | - | 2WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Type | Category I | - |
| Hitch Position | Rear | - |
| Hydraulic System Type | Open center | - |
| Operator Station Type | Open | - |
