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International Harvester 660

International Harvester 660 tractor
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The International Harvester 660 is a standard-tread farm tractor produced from 1959 to 1963. It features multiple engine options including gasoline, diesel, and LP gas 6-cylinder engines, all rated at 95 hp. The tractor offers 5-speed and 10-speed transmissions with a Torque Amplifier option for clutchless shifting. It has a wheelbase of 85.5 inches and weighs between 9,635 and 9,875 pounds depending on the engine type. The 660 supports a rear independent 540 PTO and has hydraulic flow options up to 17 gpm. It was built in a total of 6,945 units and originally sold for around $6,000 in 1963. Attachments include the Wagner 625 front-end loader with a 4000 lbs lift capacity.
International Harvester 660IH 660farm tractortractor specifications95 hp tractor1959 tractor1960 tractor1961 tractor1962 tractor1963 tractor
Power95 hp
Founded1959 - 1963
Model660

Technical Specifications

Detailed specifications and technical data for International Harvester 660

Power

Plows:6
Engine power:95 hp (70.8 kW)
PTO (tested):81.39 hp (60.7 kW)
Drawbar (tested):70.21 hp (52.4 kW)

Engine

Power:95 hp (70.8 kW)
Torque:219 lb-ft (297.0 Nm)
Fuel tank:33 gal (gas/diesel) (124.9 L), 37.5 gal (LP gas) (141.9 L)
Rated RPM:2400
Torque RPM:1300
Air cleaner:oil bath
Bore/Stroke:3.5625x4.3906 inches (90 x 112 mm)
Compression:7.2:1
Displacement:263 ci (4.3 L)
Oil capacity:9 qts (8.5 L)
Power LP gas:95 hp (70.8 kW)
Power diesel:95 hp (70.8 kW)
Torque LP gas:212 lb-ft (287.5 Nm)
Torque diesel:219 lb-ft (297.0 Nm)
Engine options:International Harvester 4.3L 6-cyl gasoline, International Harvester 4.6L 6-cyl diesel, International Harvester 4.3L 6-cyl LP gas
Coolant capacity:20 qts (18.9 L)
Rated RPM LP gas:2400
Rated RPM diesel:2400
Torque RPM LP gas:1200
Torque RPM diesel:1800
Air cleaner LP gas:oil bath
Air cleaner diesel:oil bath
Bore/Stroke LP gas:3.5625x4.3906 inches (90 x 112 mm)
Bore/Stroke diesel:3.6875x4.3906 inches (94 x 112 mm)
Compression LP gas:8.75:1
Compression diesel:18.2:1
Displacement LP gas:263 ci (4.3 L)
Displacement diesel:282 ci (4.6 L)
Firing order diesel:1-5-3-6-2-4
Oil capacity LP gas:9 qts (8.5 L)
Oil capacity diesel:9 qts (8.5 L)
Coolant capacity LP gas:21 qts (19.9 L)
Coolant capacity diesel:23 qts (21.8 L)
International Harvester C-263 LP gas:6-cylinder, liquid-cooled vertical L-head
International Harvester D-282 diesel:6-cylinder, liquid-cooled vertical L-head
International Harvester C-263 gasoline:6-cylinder, liquid-cooled vertical L-head

Dimensions

Width:78 inches (min) (198 cm)
Length:142.6 inches (362 cm)
Rear tire:18.4/15-34
Wheelbase:85.5 inches (217 cm)
Front tire:7.50-18
Ag rear tire:18.4/15-34
Ag front tire:7.50-18
Weight ballasted:15,255 lbs (6919 kg)
Industrial rear tire:23.1/18-26, 16.9/14-34
Clearance (front axle):17.4 inches (44 cm)
Weight operating (gas):9,635 lbs (4370 kg)
Height (steering wheel):74 inches (187 cm)
Ground clearance (frame):19.7 inches (50 cm)
Weight operating (diesel):9,875 lbs (4479 kg)

Hydraulics

Valves:1
Total flow:12 gpm (45.4 lpm), 17 gpm (optional) (64.3 lpm)
Steering flow:2.5 gpm (9.5 lpm)

Mechanical

Drive:Two-wheel drive
Brakes:Independent mechanical disc brakes
Steering:manual, hydrostatic power optional
Operator station:Open operator station

Production

Type:Standard-tread tractor
Total built:6,945
Manufacturer:International Harvester
Original price:$6,000 (1963)
Years produced:1959 - 1963

Attachments

Height:127.2 inches height (at pin) (323 cm)
Weight:2350 lbs (1065 kg)
Lift capacity:4000 lbs lift (full at pin) (1814 kg)
Breakout force:6500 lbs breakout (2948 kg)
Front-end loader:Wagner 625 Loader

Transmission

Oil capacity:64 qts (60.6 L)
Gears (5-speed):5 forward and 1 reverse
Torque Amplifier:Yes
Transmission type:sliding gear
Transmission options:5-speed, 10-speed
Gears (Torque Amplifier):10 forward and 2 reverse
Torque Amplifier details:The Torque Amplifier (TA) provides a clutchless shift-on-the-move between direct drive (DD) and the lower TA speed.

Serial Numbers

1959:501
1960:3398
1961:4259
1962:5883
1963:6995
Final:?

Power Take-off (PTO)

Rear PTO:independent
Rear PTO Type:540

Related Models

International Harvester 560

Model:560