8 material differences · fewer than 12
Tractor oneInternational Harvester 10861976–1979No measured PTO figureTractor twoInternational Harvester 41561969–1970No measured PTO figure
Which should you choose?
Read our verdict on the 1086 and the 4156 → 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 | 1086 | 4156 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 131.2 hp | 138 hp | +5% 4156 |
| Engine declared | INTERNATIONAL HARVESTER DT-414 | INTERNATIONAL HARVESTER DT-429 | differs |
| Displacement declared | 6.78 L | 7.04 L | — |
| Maximum torque declared | 391 lb·ft · 530 N·m | — | — |
| Transmission | |||
| Top speed declared | 18.6 mph · 30 km/h | 18.6 mph · 30 km/h | — |
| Clutch declared | — | Pedal operated dry single plate clutch type 14 inches | — |
| Hydraulics & hitch | |||
| Pump flow declared | 12.0 gpm · 45.4 L/min | 16.5 gpm · 62.5 L/min | +38% 4156 |
| Rear PTO speeds declared | 540/1000 rpm | 1000 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 12,725 lb · 5,772 kg | 15,174 lb · 6,883 kg | +19% 4156 |
| Wheelbase declared | 104.8 in · 2,662 mm | 102.0 in · 2,590 mm | — |
| Length declared | 168.0 in · 4,267 mm | 194.0 in · 4,928 mm | +15% 4156 |
| Width declared | 102.0 in · 2,591 mm | 95.7 in · 2,430 mm | +7% 1086 |
| Ground clearance declared | 13.0 in · 330 mm | 17.3 in · 440 mm | +33% 4156 |
| Turning radius, braked declared | 11.6 ft · 3.53 m | — | — |
| Fuel tank declared | 252.0 qt · 238.5 L | 400.0 qt · 378.5 L | +59% 4156 |
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 1086 sources
Source
- Source: Traktorenlexikon, “IHC 1086”
- Source: Traktorenlexikon, “IHC 1066”
International Harvester 4156 sources
Source
- Source: Traktorenlexikon, “IHC 4156”
- Source: Traktorenlexikon, “IHC 4100”