International Harvester 660: all source data
All 99 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.
Overview
Production| Manufacturer | International Harvester |
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| (no label) | Standard-tread tractor |
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| Total built | 6,945 |
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| Original price | $6,000 (1963) |
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Engine| (no label) | International Harvester 4.3L 6-cyl gasoline |
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| (no label) | International Harvester 4.6L 6-cyl diesel |
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| (no label) | International Harvester 4.3L 6-cyl LP gas |
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| Fuel tank | 33 gal (gas/diesel) | 124.9 L |
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| Fuel tank | 37.5 gal (LP gas) | 141.9 L |
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Transmission| (no label) | 5-speed |
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| (no label) | 10-speed |
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Power| Engine | 95 hp | 70.8 kW |
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| Plows | 6 |
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| Drawbar (tested) | 70.21 hp | 52.4 kW |
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| PTO (tested) | 81.39 hp | 60.7 kW |
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Mechanical| (no label) | Two-wheel drive |
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| Steering | manual |
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| Steering | hydrostatic power optional |
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| (no label) | Independent mechanical disc brakes |
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| (no label) | Open operator station. |
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Hydraulics| Valves | 1 |
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| Total flow | 12 gpm | 45.4 lpm |
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| Total flow | 17 gpm (optional) | 64.3 lpm |
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| Steering flow | 2.5 gpm | 9.5 lpm |
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Pto| Rear PTO | independent |
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| Rear PTO Type | 540 |
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Dimensions| Wheelbase | 85.5 inches | 217 cm |
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| Weight | 9635 to 9875 pounds |
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| Front tire | 7.50-18 |
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| Rear tire | 18.4/15-34 |
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Serial location| (no label) | Right side of clutch housing |
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Engine
Engine options| (no label) | International Harvester 4.3L 6-cyl gasoline |
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| (no label) | International Harvester 4.6L 6-cyl diesel |
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| (no label) | International Harvester 4.3L 6-cyl LP gas |
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Engine detail| (no label) | International Harvester C-263 |
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| (no label) | gasoline |
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| (no label) | 6-cylinder |
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| (no label) | liquid-cooled vertical L-head |
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| Displacement | 263 ci | 4.3 L |
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| Bore/Stroke | 3.5625x4.3906 inches | 90 x 112 mm |
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| Power | 95 hp | 70.8 kW |
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| Air cleaner | oil bath |
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| Compression | 7.2:1 |
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| Rated RPM | 2400 |
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| Torque | 219 lb-ft | 297.0 Nm |
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| Torque RPM | 1300 |
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| Oil capacity | 9 qts | 8.5 L |
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| Coolant capacity (Coolant) | 20 qts | 18.9 L |
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| (no label) | International Harvester D-282 |
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| (no label) | diesel |
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| (no label) | 6-cylinder |
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| (no label) | liquid-cooled vertical L-head |
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| Displacement | 282 ci | 4.6 L |
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| Bore/Stroke | 3.6875x4.3906 inches | 94 x 112 mm |
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| Power | 95 hp | 70.8 kW |
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| Air cleaner | oil bath |
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| Compression | 18.2:1 |
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| Rated RPM | 2400 |
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| Torque | 219 lb-ft | 297.0 Nm |
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| Torque RPM | 1800 |
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| Firing order | 1-5-3-6-2-4 |
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| Oil capacity | 9 qts | 8.5 L |
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| Coolant capacity (Coolant) | 23 qts | 21.8 L |
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| (no label) | International Harvester C-263 |
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| (no label) | LP gas |
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| (no label) | 6-cylinder |
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| (no label) | liquid-cooled vertical L-head |
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| Displacement | 263 ci | 4.3 L |
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| Bore/Stroke | 3.5625x4.3906 inches | 90 x 112 mm |
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| Power | 95 hp | 70.8 kW |
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| Air cleaner | oil bath |
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| Compression | 8.75:1 |
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| Rated RPM | 2400 |
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| Torque | 212 lb-ft | 287.5 Nm |
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| Torque RPM | 1200 |
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| Oil capacity | 9 qts | 8.5 L |
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| Coolant capacity (Coolant) | 21 qts | 19.9 L |
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Transmission
Transmission options| (no label) | 5-speed |
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| (no label) | 10-speed |
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Transmission| Transmission | sliding gear |
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| Gears | 5 forward and 1 reverse |
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| Oil capacity | 64 qts | 60.6 L |
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| Transmission | Torque Amplifier |
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| Gears | 10 forward and 2 reverse |
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| Oil capacity | 64 qts | 60.6 L |
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| (no label) | The Torque Amplifier (TA) provides a clutchless shift-on-the-move between direct drive (DD) and the lower TA speed. |
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Dimensions
Tires| Ag front | 7.50-18 |
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| Ag rear | 18.4/15-34 |
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| Industrial rear | 23.1/18-26 |
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| Industrial rear | 16.9/14-34 |
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Dimensions| Wheelbase | 85.5 inches | 217 cm |
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| Length | 142.6 inches | 362 cm |
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| Width | 78 inches (min) | 198 cm |
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| Height (steering wheel) | 74 inches | 187 cm |
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| Ground clearance | 19.7 inches (frame) | 50 cm |
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| Clearance (front axle) | 17.4 inches | 44 cm |
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Weight| Operating | 9,635 lbs (gas) | 4370 kg |
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| Operating | 9,875 lbs (diesel) | 4479 kg |
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| Ballasted | 15,255 lbs | 6919 kg |
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