This page provides a detailed comparison of the specifications for the Hart-Parr Old Reliable 30-60 and the Ventrac 4000.
| Hart-Parr Old Reliable 30-60 | Ventrac 4000 | |
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| Engine | ||
| Engine Manufacturer | Hart-Parr | - |
| Engine Cooling Type | Liquid-cooled | - |
| Engine Fuel Type | Kerosene | - |
| Engine Induction Type | Natural | - |
| Engine Cylinders | 2 | 3 |
| Engine Displacement Value | 2356 ci (38.6 L) | - |
| Engine Rated Rpm | 300 | - |
| Transmission | ||
| Transmission Type | Gear | Hydrostatic |
| Transmission Forward Gears | 1 | Infinite |
| Transmission Reverse Gears | 1 | Infinite |
| Dimensions | ||
| Length Value | 200 | 70 |
| Width Value | 106 | 48 |
| Operating Weight Value | 20100 lb (9117 kg) | 1350 lb (612 kg) |
| Miscellaneous | ||
| Chassis | 4x2 | 4x4 articulated 4WD |
| Drive Type | 2WD | 4WD |
| Hitch Type | - | I |
| Hitch Position | - | Rear |
| Operator Station Type | - | ROPS |
| Starter Type | - | Electric |
