9 material differences · fewer than 12
Tractor oneFiat 350 / Spezial (DT)1968–1974No measured PTO figureTractor twoHermann Lanz D 6341974–1978No measured PTO figure
Which should you choose?
Read our verdict on the 350 / Spezial (DT) 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
9 material differences · 2 fields identical or within 5%, which is not counted as material
| Field | 350 / Spezial (DT) | D 634 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 32.6 hp | 33.4 hp | — |
| Engine declared | FIAT-IVECO 8025.02.001 | MWM D 226-2 | differs |
| Displacement declared | 1.73 L | 2.08 L | +20% D 634 |
| Maximum torque declared | 83 lb·ft · 112 N·m | — | — |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 17.5 mph · 28.1 km/h | +12% D 634 |
| Hydraulics & hitch | |||
| Pump flow declared | 3.8 gpm · 14.4 L/min | — | — |
| Pressure declared | 2,843 psi · 196 bar | — | — |
| Rear PTO speeds declared | 540 rpm | 580/1120 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 3,120 lb · 1,415 kg | 3,924 lb · 1,780 kg | +26% D 634 |
| Wheelbase declared | 69.9 in · 1,775 mm | 81.9 in · 2,080 mm | +17% D 634 |
| Length declared | 107.5 in · 2,730 mm | 129.9 in · 3,300 mm | +21% D 634 |
| Width declared | 58.3–78.0 in · 1,480–1,982 mm | 59.8 in · 1,520 mm | differs |
| Ground clearance declared | 18.5 in · 470 mm | 13.0 in · 330 mm | +42% 350 / Spezial (DT) |
| Turning radius, braked declared | 9.0 ft · 2.75 m | — | — |
| Fuel tank declared | 35.9 qt · 34.0 L | 37.0 qt · 35 L | — |
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 350 / Spezial (DT) sources
- Source: Traktorenlexikon, “Fiat 350/350 DT”
Hermann Lanz D 634 sources
- Source: Traktorenlexikon, “HELA D634”