8 material differences · fewer than 12
Tractor oneInternational Harvester 4441972–1977No measured PTO figureTractor twoOLIVER 1255 (4 WD)1969–1971No measured PTO figure
Which should you choose?
We will not advise between these two machines, because they were not built in overlapping years (1972–1977; 1969–1971). 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
8 material differences · 7 fields identical or within 5%, which is not counted as material
| Field | 444 | 1255 (4 WD) | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 41.4 hp | 41.4 hp | — |
| Engine declared | INTERNATIONAL HARVESTER BD-154 A | FIAT 853-A | differs |
| Displacement declared | 2.52 L | 2.34 L | +8% 444 |
| Maximum torque declared | 116 lb·ft · 157 N·m | 105 lb·ft · 143 N·m | +10% 444 |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 15.5 mph · 25 km/h | — |
| Clutch declared | — | Pedal-operated dry LuK single-disc clutch | — |
| Hydraulics & hitch | |||
| Pump flow declared | 7.2 gpm · 27.3 L/min | 5.8 gpm · 21.8 L/min | +25% 444 |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 4,129 lb · 1,873 kg | 4,123 lb · 1,870 kg | — |
| Wheelbase declared | 70.0 in · 1,778 mm | 75.7 in · 1,922 mm | +8% 1255 (4 WD) |
| Length declared | 121.0 in · 3,073 mm | 115.0 in · 2,921 mm | — |
| Width declared | 65.0 in · 1,651 mm | 62.9–87.3 in · 1,598–2,218 mm | differs |
| Height, over the steering wheel declared | 58.0 in · 1,473 mm | 58.6 in · 1,488 mm | — |
| Ground clearance declared | 17.0 in · 432 mm | 18.2 in · 462 mm | +7% 1255 (4 WD) |
| Turning radius, braked declared | 8.2 ft · 2.49 m | 9.4 ft · 2.86 m | +15% 1255 (4 WD) |
| Fuel tank declared | 56.0 qt · 53.0 L | 57.1 qt · 54.0 L | — |
International Harvester 444 sources
Source
- Source: Traktorenlexikon, “IHC 444”
OLIVER 1255 (4 WD) sources
Source
- Source: Traktorenlexikon, “Oliver 1255”
- Source: Traktorenlexikon, “Oliver 1250-A”