Farmall · Letter Series series
Farmall M
Row-crop tractor · 1939–1953 · Gasoline
The Farmall M was International Harvester's larger "three-plow" row-crop tractor, the senior partner to the smaller Farmall H. Over 270,000 were built between 1939 and 1953 at Rock Island, Illinois, with additional assembly in England and Australia for export markets. It became a fixture of American wartime food production and, alongside the H, defined IH's dominant Letter Series lineup.
- belt power
- 36.7 hp
- Weight
- 4,858 lb (2,204 kg)
- Displacement
- 248 ci (4.1 L)
- Total built
- 270,140
Specifications
| Type | Row-crop |
|---|---|
| Series | Letter Series |
| Production | 1939–1953 |
| Factory | Rock Island, Illinois, USA |
| Total built | 270,140 |
| Original price | $1,440 (1946 USD) |
| Make | International Harvester |
|---|---|
| Model | C-248 |
| Fuel | Gasoline |
| Cylinders | 4 |
| Displacement | 248 ci (4.1 L) |
| Bore × stroke | 3.875x5.25 in |
| Rated speed | 1,450 rpm |
| Compression | 5.65:1 |
| Cooling | liquid-cooled |
| Aspiration | Naturally aspirated |
| Drawbar power | 33.1 hp (24.7 kW) |
|---|---|
| Belt power | 36.7 hp (27.3 kW) |
| Nebraska test | Nebraska Test 328 |
| Transmission | sliding-gear — 5 forward, 1 reverse |
|---|---|
| Chassis | 4x2 2WD |
| Steering | manual |
| Brakes | mechanical |
| Hydraulics | Lift-All |
|---|---|
| Rear PTO | transmission |
| PTO speed | 540 rpm |
| Weight | 4,858 lb (2,204 kg) |
|---|---|
| Wheelbase | 88.5 in (225 cm) |
| Length | 133 in (338 cm) |
| Width | 84 in (213 cm) |
| Height | 78.3 in (199 cm) |
| Fuel capacity | 21 gal (79.5 L) |
| Coolant | 24 qt (22.7 L) |
| Crankcase | 8 qt (7.57 L) |
| Front tires | 6.00-16 |
| Rear tires | 11-38 |
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