10 material differences · fewer than 12
Tractor oneFiat 550 (DT)1968–1978No measured PTO figureTractor twoFordson County Super IV1960–1964No measured PTO figure
Which should you choose?
Read our verdict on the 550 (DT) and the Super IV → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
10 material differences · 4 fields identical or within 5%, which is not counted as material
| Field | 550 (DT) | Super IV | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 51.2 hp | 51.2 hp | — |
| Engine declared | FIAT-IVECO 8045 | FORD Mk-3 | differs |
| Displacement declared | 3.12 L | 3.61 L | +16% Super IV |
| Maximum torque declared | 137 lb·ft · 186 N·m | 173 lb·ft · 234 N·m | +26% Super IV |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 12.4 mph · 20.0 km/h | +25% 550 (DT) |
| Clutch declared | Dry FEREDO double clutch with separate PTO control | Pedal-operated dry single-plate clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 5.8 gpm · 21.8 L/min | 5.9 gpm · 22.4 L/min | — |
| Pressure declared | 2,843 psi · 196 bar | — | — |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 4,542 lb · 2,060 kg | 6,283 lb · 2,850 kg | +38% Super IV |
| Wheelbase declared | 81.5 in · 2,070 mm | 70.9 in · 1,800 mm | +15% 550 (DT) |
| Length declared | 135.0 in · 3,430 mm | 130.3 in · 3,310 mm | — |
| Width declared | 66.5–95.3 in · 1,690–2,420 mm | — | — |
| Ground clearance declared | 16.5 in · 420 mm | 13.5 in · 342 mm | +23% 550 (DT) |
| Turning radius, braked declared | 10.3 ft · 3.13 m | 18.0 ft · 5.50 m | +76% Super IV |
| Fuel tank declared | 57.1 qt · 54.0 L | 72.4 qt · 68.5 L | +27% Super IV |
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.
Fiat 550 (DT) sources
- Source: Traktorenlexikon, “Fiat 550/550 DT”
Fordson County Super IV sources
- Source: Traktorenlexikon, “Fordson County Super IV”
- Source: Traktorenlexikon, “Fordson Power Major”