11 material differences · fewer than 12
Tractor oneFiat 550 (DT)1968–1978No measured PTO figureTractor twoFordson Power Major1958–1960No measured PTO figure
Which should you choose?
We will not advise between these two machines, because they were not built in overlapping years (1968–1978; 1958–1960). 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
11 material differences · 3 fields identical or within 5%, which is not counted as material
| Field | 550 (DT) | Power Major | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 51.2 hp | 51.8 hp | — |
| Engine declared | FIAT-IVECO 8045 | FORD Mk-3 | differs |
| Displacement declared | 3.12 L | 3.61 L | +16% Power Major |
| Maximum torque declared | 137 lb·ft · 186 N·m | 178 lb·ft · 241 N·m | +30% Power Major |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 13.7 mph · 22 km/h | +14% 550 (DT) |
| Clutch declared | Dry FEREDO double clutch with separate PTO control | pedal-operated dry single-disc 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 | 542 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 4,542 lb · 2,060 kg | 5,205 lb · 2,361 kg | +15% Power Major |
| Maximum permissible mass declared | — | 8,818 lb · 4,000 kg | — |
| Wheelbase declared | 81.5 in · 2,070 mm | 80.0 in · 2,032 mm | — |
| Length declared | 135.0 in · 3,430 mm | 130.5 in · 3,315 mm | — |
| Width declared | 66.5–95.3 in · 1,690–2,420 mm | 65.0–85.0 in · 1,651–2,159 mm | differs |
| Ground clearance declared | 16.5 in · 420 mm | 19.5 in · 495 mm | +18% Power Major |
| Turning radius, braked declared | 10.3 ft · 3.13 m | 11.6 ft · 3.55 m | +13% Power Major |
| Fuel tank declared | 57.1 qt · 54.0 L | 72.1 qt · 68.25 L | +26% Power Major |
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 Power Major sources
- Source: Traktorenlexikon, “Fordson Power Major”