8 material differences · fewer than 12
Tractor oneInternational Harvester 63881981–1984No measured PTO figureTractor twoOLIVER 21551970–1972No measured PTO figure
Which should you choose?
We will not advise between these two machines, because their unladen weight differs by more than 25% (45%); the drive differs (4WD; 2WD); they were not built in overlapping years (1981–1984; 1970–1972). 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 · 1 fields identical or within 5%, which is not counted as material
| Field | 6388 | 2155 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 130.2 hp | 141.1 hp | +8% 2155 |
| Engine declared | INTERNATIONAL HARVESTER DT-436 B | — | — |
| Displacement declared | 7.15 L | — | — |
| Transmission | |||
| Top speed declared | 18.6 mph · 30 km/h | 18.6 mph · 30 km/h | — |
| Clutch declared | — | Foot-operated dry single-disc clutch | — |
| Hydraulics & hitch | |||
| Hydraulic centre declared | — | Closed centre | — |
| Pump flow declared | 18.0 gpm · 68.1 L/min | 20.0 gpm · 75.7 L/min | +11% 2155 |
| Rear PTO speeds declared | 540/1000 rpm | 1000 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 17,421 lb · 7,902 kg | 12,050 lb · 5,466 kg | +45% 6388 |
| Wheelbase declared | 110.0 in · 2,794 mm | 104.5 in · 2,654 mm | +5% 6388 |
| Length declared | 227.0 in · 5,766 mm | 168.5 in · 4,280 mm | +35% 6388 |
| Width declared | 101.6 in · 2,581 mm | 95.0 in · 2,413 mm | +7% 6388 |
| Ground clearance declared | 22.0 in · 559 mm | 19.0 in · 483 mm | +16% 6388 |
| Turning radius, braked declared | — | 10.8 ft · 3.28 m | — |
| Fuel tank declared | 356.1–555.8 qt · 337.0–526.0 L | 159.6 qt · 151.0 L | differs |
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 6388 sources
- Source: Traktorenlexikon, “IHC 6388”
- Source: Traktorenlexikon, “IHC 5088”
OLIVER 2155 sources
- Source: Traktorenlexikon, “Oliver 2155”