11 material differences · fewer than 12
Tractor oneDavid Brown 990 Selectmatic1965–1979No measured PTO figureTractor twoInternational Harvester 4751974–1975No measured PTO figure
Which should you choose?
Read our verdict on the 990 Selectmatic and the 475 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
11 material differences · 2 fields identical or within 5%, which is not counted as material
| Field | 990 Selectmatic | 475 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | — | 58.2 hp | — |
| Engine declared | DAVID BROWN AD 4/47 or AD 4/49 A (B) | Perkins A 4.212 | differs |
| Displacement declared | — | 3.47 L | — |
| Maximum torque declared | 140 lb·ft · 190 N·m | 131 lb·ft · 178 N·m | +7% 990 Selectmatic |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 12.4–18.6 mph · 20–30 km/h | differs |
| Clutch declared | pedal-operated dry Borg & Beck single-disc clutch | Pedal-operated dry Laycock single-plate clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 7.3 gpm · 27.5 L/min | 10.1 gpm · 38.2 L/min | +39% 475 |
| Rear PTO speeds declared | 540 rpm | 540/1000 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 5,688 lb · 2,580 kg | 5,655 lb · 2,565 kg | — |
| Wheelbase declared | 78.7 in · 2,000 mm | 84.5 in · 2,146 mm | +7% 475 |
| Length declared | 126.0 in · 3,200 mm | 135.0 in · 3,430 mm | +7% 475 |
| Width declared | 67.0 in · 1,702 mm | 64.2 in · 1,630 mm | — |
| Ground clearance declared | 21.4 in · 543 mm | 16.0 in · 406 mm | +34% 990 Selectmatic |
| Turning radius, braked declared | 10.3 ft · 3.14 m | 11.1 ft · 3.37 m | +7% 475 |
| Fuel tank declared | 64.9 qt · 61.4 L | 81.7 qt · 77.3 L | +26% 475 |
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.
David Brown 990 Selectmatic sources
- Source: Traktorenlexikon, “David Brown 990”
International Harvester 475 sources
- Source: Traktorenlexikon, “IHC 475”
- Source: Traktorenlexikon, “Massey Ferguson MF 165 S”