8 material differences · fewer than 12
Tractor oneFord 4000 (A) 6X/6Y1964–1975No measured PTO figureTractor twoSOMECA 550 (DT)1968–1971No measured PTO figure
Which should you choose?
Read our verdict on the 4000 (A) 6X/6Y and the 550 (DT) → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
8 material differences · 7 fields identical or within 5%, which is not counted as material
| Field | 4000 (A) 6X/6Y | 550 (DT) | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 51.2 hp | 51.2 hp | — |
| Engine declared | Ford ND 2.506 E or 2.512 E | O.M.-FIAT 854.000 or A 1.000 | differs |
| Displacement declared | 3.29 L | 3.12 L | +5% 4000 (A) 6X/6Y |
| Maximum torque declared | — | 137 lb·ft · 186 N·m | — |
| Transmission | |||
| Top speed declared | 12.4–18.6 mph · 20–30 km/h | 14.9 mph · 24 km/h | differs |
| Clutch declared | Dry Borg & Beck double clutch | pedal-operated dry Feredo two-stage double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 5.3 gpm · 20.1 L/min | 5.8 gpm · 21.8 L/min | +8% 550 (DT) |
| Pressure declared | 2,489 psi · 172 bar | 2,843 psi · 196 bar | +14% 550 (DT) |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 4,579 lb · 2,077 kg | 4,542 lb · 2,060 kg | — |
| Wheelbase declared | 84.5 in · 2,146 mm | 81.5 in · 2,070 mm | — |
| Length declared | 138.6 in · 3,520 mm | 135.0 in · 3,430 mm | — |
| Width declared | 60.0 in · 1,524 mm | 66.5–95.3 in · 1,690–2,420 mm | differs |
| Ground clearance declared | 17.3 in · 440 mm | 16.5 in · 420 mm | — |
| Turning radius, braked declared | 10.7 ft · 3.25 m | 10.3 ft · 3.13 m | — |
| Fuel tank declared | 63.9 qt · 60.5 L | 57.1 qt · 54.0 L | +12% 4000 (A) 6X/6Y |
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.
Ford 4000 (A) 6X/6Y sources
- Source: Traktorenlexikon, “Ford 4000”
SOMECA 550 (DT) sources
- Source: Traktorenlexikon, “Someca 550”