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| info | |
| 1975 - 1976 66 Series, Four-wheel Drive (4WD) tractor | |
| Next model: | International Harvester 4586 |
| Series back: | International Harvester 4366 |
| Production | |
| Distributor: | International Harvester |
| Manufacturer: | Steiger |
| Factory: | Fargo, North Dakota, USA |
| Original price (USD): | $48,500 (1976) |
| Dimensions & Tires | |
| Weight: | 19,800 lbs [8981 kg] |
| Front tire: | 24.5-32 |
| Rear tire: | 24.5-32 |
| 4568 Serial Numbers | |
| - Serial numbers unknown - |
| International Harvester 4568 Power | |
| Engine: | 300 hp [223.7 kW] |
| Drawbar (claimed): | 230.17 hp [171.6 kW] |
| Mechanical | |
| Chassis: | 4x4 4WD |
| Cab: | standard |
| info | |
| Bore/Stroke: | 5.31x4.50 inches [135 x 114 mm] |
| Power: | 300 hp [223.7 kW] |
| Rated RPM: | 2600 |
| Torque: | 825 lb-ft [1118.7 Nm] |
| Torque RPM: | 1800 |
| Engine Detail | |
| International Harvester DVT-800, turbo diesel, 8-cylinder, liquid-cooled V8, 798 ci [13.1 L] |
| info | |
| Next model: | International Harvester 4586 |
| Series back: | International Harvester 4366 |
| Transmission | |
| Transmission: | continuous mesh |
| Gears: | 10 forward and 2 reverse |
| info | |
| Next model: | International Harvester 4586 |
| Series back: | International Harvester 4366 |
| Dimensions | |
| Weight: | 19,800 lbs [8981 kg] |
| International Harvester 4568 Tires | |
| Ag front: | 24.5-32 |
| Ag rear: | 24.5-32 |