This page provides a detailed comparison of the specifications for the Chamberlain C670 and the Hart-Parr Old Reliable 30-60.
| Chamberlain C670 | Hart-Parr Old Reliable 30-60 | |
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| Engine | ||
| Engine Manufacturer | Perkins | Hart-Parr |
| Engine Model | 6.306 | - |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Diesel | Kerosene |
| Engine Induction Type | Direct injection | Natural |
| Engine Cylinders | 6 | 2 |
| Engine Displacement Value | 306 ci (5.0 L) | 2356 ci (38.6 L) |
| Engine Rated Rpm | 2000 | 300 |
| Engine Power Output Value | 70 hp (52.2 kW) | - |
| Transmission | ||
| Transmission Type | Gear | Gear |
| Transmission Forward Gears | 9 | 1 |
| Transmission Reverse Gears | 3 | 1 |
| Dimensions | ||
| Length Value | 151 | 200 |
| Width Value | 84.6 | 106 |
| Operating Weight Value | 7425 lb (3368 kg) | 20100 lb (9117 kg) |
| Miscellaneous | ||
| Chassis | - | 4x2 |
| Drive Type | - | 2WD |
| Hitch Category | II | - |
| Hydraulic System Type | Open Center | - |
| Starter Type | Electric | - |
