9 material differences · fewer than 12
Tractor oneInternational Harvester 5741970–1975No measured PTO figureTractor twoZETOR 5511/55451966–1972No measured PTO figure
Which should you choose?
We will not advise between these two machines, because the drive differs (2WD; Two-wheel or four-wheel drive). 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
9 material differences · 5 fields identical or within 5%, which is not counted as material
| Field | 574 | 5511/5545 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 65.0 hp | 51.2 hp | +27% 574 |
| Engine declared | INTERNATIONAL-HARVESTER D-239 | ZETOR Z-5501 | differs |
| Displacement declared | 3.91 L | 3.12 L | +25% 574 |
| Maximum torque declared | 153 lb·ft · 207 N·m | 133 lb·ft · 180 N·m | +15% 574 |
| Transmission | |||
| Top speed declared | 15.5–18.6 mph · 25–30 km/h | 18.6 mph · 30 km/h | differs |
| Clutch declared | pedal-operated dry single-disc clutch | Pedal operated dry two-stage double clutch with mechanical booster | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 11.4–12.6 gpm · 43.1–47.7 L/min | 5.3 gpm · 20.0 L/min | differs |
| Pressure declared | — | 2,134 psi · 147 bar | — |
| Rear PTO speeds declared | 540/1000 rpm | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 5,163 lb · 2,342 kg | 5,388 lb · 2,444 kg | — |
| Wheelbase declared | 85.0 in · 2,160 mm | 88.9 in · 2,257 mm | — |
| Length declared | 139.0 in · 3,531 mm | 146.1 in · 3,710 mm | — |
| Width declared | 69.0 in · 1,753 mm | 72.2 in · 1,833 mm | — |
| Ground clearance declared | 16.0 in · 406 mm | 16.5 in · 420 mm | — |
| Turning radius, braked declared | 9.0 ft · 2.74 m | 11.0 ft · 3.34 m | +22% 5511/5545 |
| Fuel tank declared | 81.7 qt · 77.3 L | 74.0 qt · 70.0 L | +10% 574 |
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.
International Harvester 574 sources
- Source: Traktorenlexikon, “IHC 574”
- Source: Traktorenlexikon, “IHC 574 (USA)”
ZETOR 5511/5545 sources
- Source: Traktorenlexikon, “Zetor 5511”