7 material differences · fewer than 12
Tractor oneInternational Harvester 15661974–1976No measured PTO figureTractor twoInternational Harvester 41661972–1976No 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
7 material differences · 6 fields identical or within 5%, which is not counted as material
| Field | 1566 | 4166 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 161 hp | 150.9 hp | +7% 1566 |
| Engine declared | INTERNATIONAL HARVESTER DT-436 | INTERNATIONAL HARVESTER DT-436 | — |
| Displacement declared | 7.14 L | 7.14 L | — |
| Transmission | |||
| Top speed declared | 18.6 mph · 30 km/h | 18.6 mph · 30 km/h | — |
| Clutch declared | Pedal-operated ceramic clutch | Pedal operated dry single plate clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 12.0 gpm · 45.5 L/min | 16.5 gpm · 62.5 L/min | +37% 4166 |
| Rear PTO speeds declared | 1000 rpm | 1000 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 15,194 lb · 6,892 kg | 16,325 lb · 7,405 kg | +7% 4166 |
| Wheelbase declared | 104.8 in · 2,662 mm | 102.0 in · 2,591 mm | — |
| Length declared | 168.0 in · 4,267 mm | 194.0 in · 4,928 mm | +15% 4166 |
| Width declared | 112.0 in · 2,845 mm | 103.0 in · 2,616 mm | +9% 1566 |
| Height, over the exhaust declared | 125.0 in · 3,175 mm | 138.0 in · 3,505 mm | +10% 4166 |
| Ground clearance declared | 17.0 in · 432 mm | 17.0 in · 432 mm | — |
| Turning radius, braked declared | 11.9 ft · 3.63 m | — | — |
| Fuel tank declared | 168.0 qt · 159.0 L | 400.0 qt · 378.5 L | +138% 4166 |
International Harvester 1566 sources
Source
- Source: Traktorenlexikon, “Farmall Farmall 1566”
- Source: Traktorenlexikon, “IHC 1466”
- Source: Traktorenlexikon, “IHC 1566”
International Harvester 4166 sources
Source
- Source: Traktorenlexikon, “IHC 4166”
- Source: Traktorenlexikon, “IHC 1466”