international harvester 666
![]() | 1972 - 1976
Row-Crop tractor | 1972 - 1976 | Row-Crop tractor |
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1972 - 1976 | |||
Row-Crop tractor |
1972 - 1976 | |
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Row-Crop tractor |
Production | |
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Manufacturer | International Harvester |
Row-Crop tractor | |
Built in Rock Island, Illinois, USA | |
Total built | 9,367 |
Original price | $11,875 |
Torque amplifier was an option. In 1973, the hydrostatic version of the 666 was renamed the 70 Hydro. |
International Harvester 666 Engines | |
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International Harvester 5.1L 6-cyl diesel | |
International Harvester 4.8L 6-cyl gasoline | |
Gas Fuel tank | 33 gal
124.9 L |
Diesel Fuel tank | 31 gal
117.3 L |
Engine details ... ![]() |
International Harvester 666 Transmissions | |
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5-speed | |
hydrostatic | |
10-speed two-speed power shift | |
Transmission details ... ![]() |
International Harvester 666 Power | |
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Engine (gross) | 75 hp
55.9 kW |
Drawbar (claimed) | 57 hp (gear)
42.5 kW |
| 54 hp (hydro)
40.3 kW |
PTO (claimed) | 65 hp (gear)
48.5 kW |
| 69 hp (hydro)
51.5 kW |
Drawbar (tested) | 58.01 hp
43.3 kW |
PTO (tested) | 69.61 hp
51.9 kW |
Performance test details ... ![]() |
Mechanical | |
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Two-wheel drive | |
Power steering | |
Dry disc brakes | |
Open operator station. Two-post ROPS or canopy optional. Cab available with air-conditioning. |
Hydraulics | |
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Type | open center |
Pump flow | 12 gpm
45.4 lpm |
Tractor hitch | |
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Rear Type | II |
Type | IH Fast Hitch |
Power Take-off (PTO) | |
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Rear PTO | independent |
Rear PTO Type | 540 (1.375) |
Dimensions & Tires | |
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Wheelbase | 103 inches
261 cm |
Weight | 6780 to 7420 pounds |
Front tire | 7.50-16 |
Rear tire | 15.5-38 |
Full dimensions and tires ... ![]() |
666 Serial Numbers | |
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Location: | Clutch housing, right side |
1972 | 7500 |
1973 | 8200 |
1974 | 11585 |
1975 | 13131 |
1976 | 15739 |
FAQ: How to read a serial number table. |
Electrical | |
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Charging system | alternator |
Battery volts | 12 |
References | |
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![]() | |
Farm Equipment Reference Catalog published in 1972, by International Harvester |
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