International Harvester Farmall 1066 vs International Harvester 3688
8 material differences · fewer than 12
Which should you choose?
We will not advise between these two machines, because the drive differs (2WD; Two-wheel or four-wheel drive); they were not built in overlapping years (1971–1976; 1981–1985). 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 · 6 fields identical or within 5%, which is not counted as material
| Field | Farmall 1066 | 3688 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 115.5 hp | 113.5 hp | — |
| Engine declared | INTERNATIONAL HARVESTER DT-414 | INTERNATIONAL HARVESTER DT-436 | differs |
| Displacement declared | 6.78 L | 7.14 L | +5% 3688 |
| Transmission | |||
| Top speed declared | 18.6 mph · 30 km/h | 19.9 mph · 32 km/h | +7% 3688 |
| Hydraulics & hitch | |||
| Pump flow declared | 12.0 gpm · 45.5 L/min | 18.0 gpm · 68.1 L/min | +50% 3688 |
| Three-point lift at ends declared | 5,798 lb · 2,630 kg | — | — |
| Rear PTO speeds declared | 540/1000 rpm | 540/1000 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 12,145 lb · 5,509 kg | 13,201 lb · 5,988 kg | +9% 3688 |
| Wheelbase declared | 104.8 in · 2,662 mm | 104.8 in · 2,662 mm | — |
| Length declared | 165.0 in · 4,191 mm | 184.0 in · 4,674 mm | +12% 3688 |
| Width declared | 98.0 in · 2,489 mm | 102.0 in · 2,591 mm | — |
| Height declared | 111.0 in · 2,819 mm | 112.0 in · 2,845 mm | — |
| Ground clearance declared | 16.0 in · 406 mm | 13.0 in · 330 mm | +23% Farmall 1066 |
| Turning radius, braked declared | 12.0 ft · 3.66 m | 11.7 ft · 3.58 m | — |
| Fuel tank declared | 168.0 qt · 159.0 L | 200.0 qt · 189.3 L | +19% 3688 |
International Harvester Farmall 1066 sources
Source
- Source: Traktorenlexikon, “IHC 1066”
- Source: Traktorenlexikon, “Farmall Farmall 1066”
International Harvester 3688 sources
Source
- Source: Traktorenlexikon, “IHC 3688”
- Source: Traktorenlexikon, “IHC 1466”