9 material differences · fewer than 12
Tractor oneFiat 550 (DT)1968–1978No measured PTO figureTractor twoInternational Harvester W-4501956–1958No measured PTO figure
Which should you choose?
Read our verdict on the 550 (DT) and the W-450 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
9 material differences · 4 fields identical or within 5%, which is not counted as material
| Field | 550 (DT) | W-450 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 51.2 hp | 51.2 hp | — |
| Engine declared | FIAT-IVECO 8045 | INTERNATIONAL HARVESTER C-281 | differs |
| Displacement declared | 3.12 L | 4.60 L | +47% W-450 |
| Maximum torque declared | 137 lb·ft · 186 N·m | — | — |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 16.2 mph · 26 km/h | — |
| Clutch declared | Dry FEREDO double clutch with separate PTO control | Pedal-actuated dry single-plate clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 5.8 gpm · 21.8 L/min | — | — |
| Pressure declared | 2,843 psi · 196 bar | — | — |
| Rear PTO speeds declared | 540 rpm | 539 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 4,542 lb · 2,060 kg | 5,721 lb · 2,595 kg | +26% W-450 |
| Wheelbase declared | 81.5 in · 2,070 mm | 82.0 in · 2,083 mm | — |
| Length declared | 135.0 in · 3,430 mm | 130.0 in · 3,302 mm | — |
| Width declared | 66.5–95.3 in · 1,690–2,420 mm | 75.7 in · 1,924 mm | differs |
| Height, over the exhaust declared | 71.5 in · 1,815 mm | 93.4 in · 2,372 mm | +31% W-450 |
| Ground clearance declared | 16.5 in · 420 mm | — | — |
| Turning radius, braked declared | 10.3 ft · 3.13 m | 12.5 ft · 3.80 m | +21% W-450 |
| Fuel tank declared | 57.1 qt · 54.0 L | 79.3 qt · 75.0 L | +39% W-450 |
Fiat 550 (DT) sources
Source
- Source: Traktorenlexikon, “Fiat 550/550 DT”
International Harvester W-450 sources
Source
- Source: Traktorenlexikon, “IHC International W-450”
- Source: Traktorenlexikon, “IHC Farmall 450”