Specs of agricultural tractor International 554/644/744/844 :
| Model | International 554 | International 644 | International 744 | International 844 |
| Years of production | 74-75 | 74-80 | 74-80 | 74-80 |
| Engine model / type | D-206 | D-206 | D-239 | D-246 |
| Number of cylinders / turbocharging | 4 | 4 | 4 | 4 |
| Engine displacement (cm3) | 3382 | 3382 | 3911 | 4034 |
| Piston dimension / stroke (mm) | 98,4×111,1 | 98,4×111,1 | 98,4×128,5 | 100×128,5 |
| Maximum engine power (hp) / rpm | 54/2180 | 60/2150 | 70/2300 | 75/2300 |
| Torque (Nm) / rpm | 196/1500 | 212/1600 | 230/1200 | 263/1500 |
| Number of gears (front + rear) | 8+4 | 8+4 | 8+4 | 8+4 |
| Number of synchronized gears (front+rear) | 8+4 | 8+4 | 8+4 | 8+4 |
| Speed-Shift | – | – | – | – |
| Type of reverse | – | – | – | – |
| Driving speed (km/h) | 1,3-27,3 | 1,8-28,3 | 1,5-29,7 | 1,5-29,7 |
| Max Driving speed (km/h) | – | – | – | – |
| Hydraulic pump capacity (L/min) | 30 | 30 | 30 | 30 |
| 3-Point Hitch control | mech | mech | mech | mech |
| 3-point hitch max load (kg) | 2900 | 2900 | 2900 | 2900 |
| PTO speed (rpm) | 540 | 540 | 540 | 540/1000 |
| Disc brake type (dry / wet) | – | – | – | – |
| Type of control of the braking system | mech | mech | mech | hydr |
| Turning radius 2WD (m) | 8,3 | 8,3 | 8,3 | 8,6 |
| Turning radius 4WD (m) | 9,5 | 9,5 | 10,2 | 10,2 |
| Front wheel 2WD | 7,50-16 | 7,50-16 | 7,50-18 | 7,50-18 |
| Front wheel 4WD | 9,5-24 | 11,2-24 | 11,2-24 | 11,2-24 |
| Rear wheel 2WD | 14,9-30 | 16,9-30 | 16,9-34 | 13,6-38 |
| Rear wheel 4WD | 16,9-30 | 16,9-34 | 16,9-34 | 16,9-34 |
| 2WD total weight (kg) | 2615 | 2880 | 3080 | 3180 |
| 4WD total weight (kg) | 3210 | 3400 | 3500 | 3600 |
| Total height with cabin (cm) | 248 | 249 | 255 | 255 |
| Total length (cm) | 349 | 349/378 | 352 | 368/394 |
| Total width (cm) | 223 | 223/219 | 223/219 | 239/235 |
| Fuel tank capacity (l) | 74 | 74 | 74 | 102 |
| Cabin sound level (dB) | 97/88 | 87,5 | 94/90 | 87 |
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International Harvester was a manufacturer of farm machinery, construction equipment, and even trucks. International Harvester was founded in 1902. through the merger of McCormick Harvesting Machine Company and Deering Harvester Company. In 1985, International Harvester’s agricultural business was merged with Case Company, and since then International’s farm tractors began to be manufactured under the new brand.
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