12 material differences
Tractor oneInternational Harvester 4541970–1973No measured PTO figureTractor twoSOMECA 500 Special (TD)1972–1983No measured PTO figure
Which should you choose?
Read our verdict on the 454 and the 500 Special (TD) → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
12 material differences · 2 fields identical or within 5%, which is not counted as material
| Field | 454 | 500 Special (TD) | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 49.3 hp | 49.3 hp | — |
| Engine declared | INTERNATIONAL-HARVESTER D-179 | FIAT-IVECO 8035.02.203/303 | differs |
| Displacement declared | 2.93 L | 2.59 L | +13% 454 |
| Maximum torque declared | 131 lb·ft · 178 N·m | 116 lb·ft · 157 N·m | +13% 454 |
| Transmission | |||
| Top speed declared | 19.9 mph · 32 km/h | 15.5 mph · 25 km/h | +28% 454 |
| Clutch declared | — | dry LuK double clutch | — |
| Hydraulics & hitch | |||
| Pump flow declared | 11.4–12.6 gpm · 43.1–47.7 L/min | 5.8 gpm · 21.8 L/min | differs |
| Pressure declared | — | 2,843 psi · 196 bar | — |
| Rear PTO speeds declared | 540/1000 rpm | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 4,720 lb · 2,141 kg | 4,145 lb · 1,880 kg | +14% 454 |
| Wheelbase declared | 75.2 in · 1,910 mm | 76.9 in · 1,953 mm | — |
| Length declared | 133.0 in · 3,378 mm | 119.7 in · 3,041 mm | +11% 454 |
| Width declared | 66.0 in · 1,676 mm | 65.4–87.8 in · 1,660–2,230 mm | differs |
| Ground clearance declared | 10.0 in · 254 mm | 18.1 in · 459 mm | +81% 500 Special (TD) |
| Turning radius, braked declared | 9.2 ft · 2.79 m | 9.7 ft · 2.95 m | +6% 500 Special (TD) |
| Fuel tank declared | 74.0 qt · 70.0 L | 57.1 qt · 54.0 L | +30% 454 |
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 454 sources
Source
- Source: Traktorenlexikon, “IHC 454 (USA)”
- Source: Traktorenlexikon, “McCormick 523”
SOMECA 500 Special (TD) sources
Source
- Source: Traktorenlexikon, “Someca 500 S”