7 material differences · fewer than 12
Tractor oneInternational Harvester DGD 41953–1956No measured PTO figureTractor twoOLIVER 5001961–1963No measured PTO figure
Which should you choose?
We will not advise between these two machines, because they were not built in overlapping years (1953–1956; 1961–1963). The figures below are side by side so you can judge them yourself; each says whether it was measured, claimed or declared by its source.
Field by field
7 material differences · 6 fields identical or within 5%, which is not counted as material
| Field | DGD 4 | 500 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 29.6 hp | 34.5 hp | +16% 500 |
| Engine declared | INTERNATIONAL-HARVESTER DD-132 | DAVID BROWN AD 4/36 A-106 | differs |
| Displacement declared | 2.18 L | 2.52 L | +16% 500 |
| Maximum torque declared | 91 lb·ft · 123 N·m | 110 lb·ft · 149 N·m | +21% 500 |
| Transmission | |||
| Top speed declared | 12.4 mph · 20 km/h | 15.5 mph · 25 km/h | +25% 500 |
| Clutch declared | pedal-operated dry single-plate clutch | Pedal-operated dry single-plate clutch | — |
| Hydraulics & hitch | |||
| Pump flow declared | — | 6.0 gpm · 22.7 L/min | — |
| Rear PTO speeds declared | 540 rpm | 540 rpm / 1000 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 3,814 lb · 1,730 kg | 3,704 lb · 1,680 kg | — |
| Wheelbase declared | 70.0 in · 1,778 mm | 75.2 in · 1,911 mm | +7% 500 |
| Length declared | 111.6 in · 2,834 mm | 113.6 in · 2,885 mm | — |
| Width declared | 64.2 in · 1,630 mm | 62.8 in · 1,594 mm | — |
| Ground clearance declared | 15.4 in · 390 mm | 15.4 in · 390 mm | — |
| Turning radius, braked declared | 8.9 ft · 2.70 m | 7.9 ft · 2.41 m | +12% DGD 4 |
| Fuel tank declared | 41.2 qt · 39.0 L | 42.1 qt · 39.8 L | — |
Height is not in this table. It is not one measurement: the sources measure it to different points — over the cab on some machines, over the steering wheel or the exhaust on others — and the same tractor measured two ways can differ by most of a metre. It appears here only when both machines' figures carry the point they were measured to and it is the same point, which is not the case for these two. Each machine's own page prints its height as its source gives it.
International Harvester DGD 4 sources
- Source: Traktorenlexikon, “McCormick DGD 4”
OLIVER 500 sources
- Source: Traktorenlexikon, “Oliver 500”
- Source: Traktorenlexikon, “David Brown 850”