8 material differences · fewer than 12
Tractor oneInternational Harvester McCormick WD-401935–1940No measured PTO figureTractor twoInternational Harvester WD-91940–1954No measured PTO figure
Which should you choose?
Read our verdict on the McCormick WD-40 and the WD-9 → 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 · 1 fields identical or within 5%, which is not counted as material
| Field | McCormick WD-40 | WD-9 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 51.2 hp | 46.4 hp | +10% McCormick WD-40 |
| Engine declared | INTERNATIONAL HARVESTER 355 | INTERNATIONAL HARVESTER D-335 | differs |
| Displacement declared | 7.55 L | 5.48 L | +38% McCormick WD-40 |
| Transmission | |||
| Top speed declared | 12.1 mph · 19.5 km/h | 16.2 mph · 26 km/h | +33% WD-9 |
| Clutch declared | Pedal operated single plate clutch | Pedal operated dry ROCKFORD single plate clutch | differs |
| Hydraulics & hitch | |||
| Rear PTO speeds declared | 540 rpm | 538 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 7,551 lb · 3,425 kg | 5,851 lb · 2,654 kg | +29% McCormick WD-40 |
| Wheelbase declared | 85.0 in · 2,159 mm | 83.0 in · 2,108 mm | — |
| Length declared | 141.5 in · 3,594 mm | 134.3 in · 3,410 mm | +5% McCormick WD-40 |
| Width declared | 65.7 in · 1,670 mm | 75.7 in · 1,924 mm | +15% WD-9 |
| Fuel tank declared | — | 140.0 qt · 132.5 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.
International Harvester McCormick WD-40 sources
- Source: Traktorenlexikon, “McCormick WD-40”
International Harvester WD-9 sources
- Source: Traktorenlexikon, “McCormick WD-9”