8 material differences · fewer than 12
Tractor oneInternational Harvester 12461972–1979No measured PTO figureTractor twoInternational Harvester 12561967–1969No measured PTO figure
Which should you choose?
Read our verdict on the 1246 and the 1256 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
8 material differences · 3 fields identical or within 5%, which is not counted as material
| Field | 1246 | 1256 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 117.7 hp | 116.4 hp | — |
| Engine declared | IHC DT-358 | INTERNATIONAL HARVESTER DT-407 | differs |
| Displacement declared | 5.87 L | 6.67 L | +14% 1256 |
| Maximum torque declared | 328 lb·ft · 444 N·m | — | — |
| Transmission | |||
| Top speed declared | 19.9 mph · 32 km/h | 18.6 mph · 30 km/h | +7% 1246 |
| Hydraulics & hitch | |||
| Pump flow declared | 10.6 gpm · 40.0 L/min | — | — |
| Rear PTO speeds declared | 1000 rpm | 1000 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 9,811 lb · 4,450 kg | 10,406 lb · 4,720 kg | +6% 1256 |
| Wheelbase declared | 100.8–102.0 in · 2,560–2,590 mm | 92.0 in · 2,337 mm | differs |
| Length declared | 165.4–167.7 in · 4,200–4,260 mm | 164.0 in · 4,166 mm | — |
| Width declared | 82.2–83.1 in · 2,088–2,111 mm | 92.0 in · 2,337 mm | differs |
| Ground clearance declared | 20.4 in · 517 mm | 23.5 in · 597 mm | +15% 1256 |
| Turning radius, braked declared | 17.6 ft · 5.35 m | — | — |
| Fuel tank declared | 116.2 qt · 110 L | 168.0 qt · 159.0 L | +45% 1256 |
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 1246 sources
Source
- Source: Traktorenlexikon, “IHC 1246”
International Harvester 1256 sources
Source
- Source: Traktorenlexikon, “IHC 1256”
- Source: Traktorenlexikon, “IHC 1026”