8 material differences · fewer than 12
Tractor oneInternational Harvester 15861976–1981No measured PTO figureTractor twoInternational Harvester 67881981–1984No measured PTO figure
Which should you choose?
We will not advise between these two machines, because the drive differs (Two-wheel or four-wheel drive; 4WD). 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 · 4 fields identical or within 5%, which is not counted as material
| Field | 1586 | 6788 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 161 hp | 170.6 hp | +6% 6788 |
| Engine declared | INTERNATIONAL HARVESTER DT-436 | INTERNATIONAL HARVESTER DT-466 B | differs |
| Displacement declared | 7.14 L | 7.64 L | +7% 6788 |
| Maximum torque declared | 456 lb·ft · 618 N·m | — | — |
| Transmission | |||
| Top speed declared | 18.6 mph · 30 km/h | 18.6 mph · 30 km/h | — |
| Clutch declared | — | Pedal operated dry clutch | — |
| Hydraulics & hitch | |||
| Pump flow declared | 12.0 gpm · 45.4 L/min | 18.0 gpm · 68.1 L/min | +50% 6788 |
| Rear PTO speeds declared | 1000 rpm | 1000 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 15,119 lb · 6,858 kg | 18,620 lb · 8,446 kg | +23% 6788 |
| Wheelbase declared | 104.8 in · 2,662 mm | 110.0 in · 2,794 mm | — |
| Length declared | 169.0 in · 4,293 mm | 228.3 in · 5,799 mm | +35% 6788 |
| Width declared | 102.0 in · 2,591 mm | 112.0 in · 2,845 mm | +10% 6788 |
| Height, over the cab declared | 116.0 in · 2,946 mm | 115.8 in · 2,941 mm | — |
| Ground clearance declared | 14.0 in · 356 mm | 28.4 in · 721 mm | +103% 6788 |
| Turning radius, braked declared | 11.2 ft · 3.40 m | — | — |
| Fuel tank declared | 252.0 qt · 238.5 L | 356.1–555.8 qt · 337.0–526.0 L | differs |
International Harvester 1586 sources
Source
- Source: Traktorenlexikon, “IHC 1586”
- Source: Traktorenlexikon, “IHC 1466”
International Harvester 6788 sources
Source
- Source: Traktorenlexikon, “IHC 6788”
- Source: Traktorenlexikon, “IHC 3588”