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| info | |
| 1959 - 1964, Row-Crop tractor | |
| Previous model: | Oliver Super 66 |
| Series next: | Oliver 770 |
| Production | |
| Manufacturer: | Oliver |
| Original price (USD): | $3,450 (1964) |
| Capacity | |
| Fuel: | 13 gal [49.2 L] |
| Hydraulic system: | 9.5 gal [36.0 L] |
| Power Take-off (PTO) | |
| Rear PTO: | independent |
| Rear RPM: | 540 |
| Dimensions & Tires | |
| Wheelbase: | 92 inches [233 cm] |
| Weight: | 4,050 lbs [1837 kg] |
| Front tire: | 6.00-16 |
| Rear tire: | 12.4-38 |
| 660 Serial Numbers | |
| Location: | Bottom of dashboard below steering wheel. |
| Oliver 660 Power | |
| PTO (claimed): | 41 hp [30.6 kW] |
| Plows: | 3 |
| Drawbar (tested): | 27.99 hp [20.9 kW] |
| Belt (tested): | 33.69 hp [25.1 kW] |
| Mechanical | |
| Chassis: | 4x2 2WD |
| Cab: | Open operator station. |
| Hydraulics | |
| Capacity: | 9.5 gal [36.0 L] |
| Pump flow: | 8 gpm [30.3 lpm] |
| info | |
| Bore/Stroke: | 3.62x3.75 inches [92 x 95 mm] |
| Compression: | 7.75:1 |
| Engine Detail | |
| Waukesha-Oliver, gasoline, 4-cylinder, liquid-cooled, 155 ci [2.5 L] |
| info | |
| Previous model: | Oliver Super 66 |
| Series next: | Oliver 770 |
| Transmission | |
| Type: | unsynchronized gear |
| Gears: | 6 forward and 2 reverse |
| info | |
| Previous model: | Oliver Super 66 |
| Series next: | Oliver 770 |
| Dimensions | |
| Weight: | 4,050 lbs [1837 kg] |
| Wheelbase: | 92 inches [233 cm] |
| Oliver 660 Tires | |
| Ag front: | 6.00-16 |
| Ag rear: | 12.4-38 |