11 material differences · fewer than 12
Tractor oneIMT 5551964–1971No measured PTO figureTractor twoInternational Harvester 4541970–1973No measured PTO figure
Which should you choose?
Read our verdict on the 555 and the 454 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
11 material differences · 3 fields identical or within 5%, which is not counted as material
| Field | 555 | 454 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 49.3 hp | 49.3 hp | — |
| Engine declared | IMR-PERKINS O-34/TA | INTERNATIONAL-HARVESTER D-179 | differs |
| Displacement declared | 3.34 L | 2.93 L | +14% 555 |
| Maximum torque declared | 141 lb·ft · 191 N·m | 131 lb·ft · 178 N·m | +7% 555 |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 19.9 mph · 32 km/h | +28% 454 |
| Clutch declared | Pedal operated dry two-stage double clutch | — | — |
| Hydraulics & hitch | |||
| Pump flow declared | 4.0 gpm · 15.1 L/min | 11.4–12.6 gpm · 43.1–47.7 L/min | differs |
| Rear PTO speeds declared | 540 rpm | 540/1000 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 4,123 lb · 1,870 kg | 4,720 lb · 2,141 kg | +14% 454 |
| Wheelbase declared | 84.8 in · 2,155 mm | 75.2 in · 1,910 mm | +13% 555 |
| Length declared | 137.2 in · 3,485 mm | 133.0 in · 3,378 mm | — |
| Width declared | 66.9 in · 1,700 mm | 66.0 in · 1,676 mm | — |
| Ground clearance declared | 23.9 in · 607 mm | 10.0 in · 254 mm | +139% 555 |
| Turning radius, braked declared | 12.3 ft · 3.75 m | 9.2 ft · 2.79 m | +34% 555 |
| Fuel tank declared | 47.6 qt · 45.0 L | 74.0 qt · 70.0 L | +56% 454 |
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.
IMT 555 sources
Source
- Source: Traktorenlexikon, “IMT 555”
International Harvester 454 sources
Source
- Source: Traktorenlexikon, “IHC 454 (USA)”
- Source: Traktorenlexikon, “McCormick 523”