8 material differences · fewer than 12
Tractor oneFiat 400 V/E1968–1971No measured PTO figureTractor twoHermann Lanz D 6341974–1978No measured PTO figure
Which should you choose?
Read our verdict on the 400 V/E and the D 634 → 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 · 3 fields identical or within 5%, which is not counted as material
| Field | 400 V/E | D 634 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 34 hp | 33.4 hp | — |
| Engine declared | O.M.-FIAT 8035.01.201 | MWM D 226-2 | differs |
| Displacement declared | 2.34 L | 2.08 L | +13% 400 V/E |
| Maximum torque declared | 103 lb·ft · 140 N·m | — | — |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 17.5 mph · 28.1 km/h | +12% D 634 |
| Clutch declared | Pedal operated two-stage dry FEREDO double clutch | — | — |
| Hydraulics & hitch | |||
| Pump flow declared | 5.8 gpm · 21.8 L/min | — | — |
| Rear PTO speeds declared | 540 rpm | 580/1120 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 3,549 lb · 1,610 kg | 3,924 lb · 1,780 kg | +11% D 634 |
| Wheelbase declared | 74.2 in · 1,885 mm | 81.9 in · 2,080 mm | +10% D 634 |
| Length declared | 127.2 in · 3,230 mm | 129.9 in · 3,300 mm | — |
| Width declared | 38.6–43.3 in · 980–1,100 mm | 59.8 in · 1,520 mm | differs |
| Ground clearance declared | 13.4 in · 340 mm | 13.0 in · 330 mm | — |
| Fuel tank declared | 57.1 qt · 54.0 L | 37.0 qt · 35 L | +54% 400 V/E |
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 400 V/E sources
- Source: Traktorenlexikon, “Fiat 400 V/E”
- Source: Traktorenlexikon, “Someca 400”
Hermann Lanz D 634 sources
- Source: Traktorenlexikon, “HELA D634”