10 material differences · fewer than 12
Tractor oneFiat 640 (DT)1973–1982No measured PTO figureTractor twoIMT 577 (DV)1981–1993No measured PTO figure
Which should you choose?
Read our verdict on the 640 (DT) and the 577 (DV) → 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 | 640 (DT) | 577 (DV) | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 63.2 hp | 69.1 hp | +9% 577 (DV) |
| Engine declared | FIAT-IVECO 8045.02.200/307 | IMR-PERKINS S-44 A/T (A 4.248) | differs |
| Displacement declared | 3.46 L | 4.07 L | +18% 577 (DV) |
| Maximum torque declared | 162 lb·ft · 219 N·m | 194 lb·ft · 263 N·m | +20% 577 (DV) |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 18.6 mph · 30 km/h | +20% 577 (DV) |
| Clutch declared | Dry Ferodo double clutch | Pedal operated dry two stage KRON NOVI double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 5.8 gpm · 21.8 L/min | 5.9 gpm · 22.3 L/min | — |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 5,181 lb · 2,350 kg | 6,482 lb · 2,940 kg | +25% 577 (DV) |
| Maximum permissible mass declared | 8,157 lb · 3,700 kg | — | — |
| Wheelbase declared | 84.3 in · 2,140 mm | 87.2 in · 2,215 mm | — |
| Length declared | 138.6 in · 3,520 mm | 144.5 in · 3,670 mm | — |
| Width declared | 67.5–93.1 in · 1,715–2,365 mm | 68.9–87.4 in · 1,750–2,220 mm | differs |
| Ground clearance declared | 20.1 in · 510 mm | 18.9 in · 480 mm | +6% 640 (DT) |
| Turning radius, braked declared | 11.2 ft · 3.42 m | 14.1 ft · 4.29 m | +25% 577 (DV) |
| Fuel tank declared | 57.1 qt · 54.0 L | 95.1 qt · 90.0 L | +67% 577 (DV) |
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 640 (DT) sources
- Source: Traktorenlexikon, “Fiat 640/640 DT”
- Source: Traktorenlexikon, “Someca 640”
IMT 577 (DV) sources
- Source: Traktorenlexikon, “IMT 577”