10 material differences · fewer than 12
Tractor oneInternational Harvester 6741973–1975No measured PTO figureTractor twoSOMECA 680 (TD)1978–1983No measured PTO figure
Which should you choose?
We will not advise between these two machines, because they were not built in overlapping years (1973–1975; 1978–1983). 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
10 material differences · 4 fields identical or within 5%, which is not counted as material
| Field | 674 | 680 (TD) | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 64.1 hp | 67 hp | — |
| Engine declared | INTERNATIONAL-HARVESTER D-239 | FIAT-IVECO 8045.02.270 (370) | differs |
| Displacement declared | 3.91 L | 3.46 L | +13% 674 |
| Maximum torque declared | 153 lb·ft · 207 N·m | — | — |
| Transmission | |||
| Top speed declared | 15.5–18.6 mph · 25–30 km/h | 15.5 mph · 25 km/h | differs |
| Clutch declared | Pedal-operated dry LAYCOCK single-plate clutch | Dry FERODO double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 11.1–12.6 gpm · 42.1–47.7 L/min | 6.8 gpm · 25.8 L/min | differs |
| Pressure declared | — | 2,843 psi · 196 bar | — |
| Rear PTO speeds declared | 540/1000 rpm | 540/1000 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 5,106 lb · 2,316 kg | 5,512 lb · 2,500 kg | +8% 680 (TD) |
| Wheelbase declared | 84.5 in · 2,146 mm | 89.2 in · 2,265 mm | +6% 680 (TD) |
| Length declared | 140.6 in · 3,570 mm | 154.3 in · 3,920 mm | +10% 680 (TD) |
| Width declared | 68.9 in · 1,750 mm | 80.3 in · 2,040 mm | +17% 680 (TD) |
| Ground clearance declared | 14.4 in · 365 mm | 20.0 in · 508 mm | +39% 680 (TD) |
| Turning radius, braked declared | 10.9 ft · 3.31 m | 11.2 ft · 3.40 m | — |
| Fuel tank declared | 81.2 qt · 76.8 L | 84.5 qt · 80.0 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 674 sources
- Source: Traktorenlexikon, “IHC 674”
- Source: Traktorenlexikon, “IHC 574”
- Source: Traktorenlexikon, “IHC 674 (USA)”
SOMECA 680 (TD) sources
- Source: Traktorenlexikon, “Someca 680”
- Source: Traktorenlexikon, “Fiat 680 /680 DT”