Search
Find your tractor.
Menu ☰
Years in Production / 1959–1963
International Harvester
660
Explore the specifications, hardware, and original references for the International Harvester 660.
95hp
Source index power
2WD Only
Drive
1959–1963
Production years
International Harvester
Manufacturer
660 / 01
At a glance
Overview
1959 - 1963
Standard-tread tractor
Production
Standard-tread tractor
- Manufacturer
- International Harvester
- Total Built
- 6,945
- Original Price
- $6,000 (1963)
Mechanical
Two-wheel drive
Independent mechanical disc brakes
Open operator station.
- Steering
- manual
- Steering
- hydrostatic power optional
Hydraulics
- Valves
- 1
- Total Flow
- 12 gpm45.4 lpm
- Total Flow
- 17 gpm (optional)64.3 lpm
- Steering Flow
- 2.5 gpm9.5 lpm
Pto
- Rear Pto
- independent
- Rear Type
- 540
Serial Numbers
FAQ: How to read a serial number table.
- 1959
- 501
- 1960
- 3398
- 1961
- 4259
- 1962
- 5883
- 1963
- 6995
- Final
- ?
660 / 02
Under the hood
Engine Detail (Option 1)
International Harvester C-263
gasoline
6-cylinder
liquid-cooled vertical L-head
- Displacement
- 263 ci4.3 L
- Bore Stroke
- 3.5625x4.3906 inches90 x 112 mm
- Power
- 95 hp70.8 kW
- Air Cleaner
- oil bath
- Compression Ratio
- 7.2:1
- Rated Rpm
- 2400
- Torque
- 219 lb-ft297.0 Nm
- Torque Rpm
- 1300
- Oil Capacity
- 9 qts8.5 L
- Coolant Capacity
- 20 qts18.9 L
- Fuel Type
- gasoline
- Cylinders
- 6
- Cooling
- liquid-cooled vertical L-head
Engine Detail (Option 2)
International Harvester D-282
diesel
6-cylinder
liquid-cooled vertical L-head
- Displacement
- 282 ci4.6 L
- Bore Stroke
- 3.6875x4.3906 inches94 x 112 mm
- Power
- 95 hp70.8 kW
- Air Cleaner
- oil bath
- Compression Ratio
- 18.2:1
- Rated Rpm
- 2400
- Torque
- 219 lb-ft297.0 Nm
- Torque Rpm
- 1800
- Firing Order
- 1-5-3-6-2-4
- Oil Capacity
- 9 qts8.5 L
- Coolant Capacity
- 23 qts21.8 L
- Fuel Type
- diesel
- Cylinders
- 6
- Cooling
- liquid-cooled vertical L-head
Engine Detail (Option 3)
International Harvester C-263
LP gas
6-cylinder
liquid-cooled vertical L-head
- Displacement
- 263 ci4.3 L
- Bore Stroke
- 3.5625x4.3906 inches90 x 112 mm
- Power
- 95 hp70.8 kW
- Air Cleaner
- oil bath
- Compression Ratio
- 8.75:1
- Rated Rpm
- 2400
- Torque
- 212 lb-ft287.5 Nm
- Torque Rpm
- 1200
- Oil Capacity
- 9 qts8.5 L
- Coolant Capacity
- 21 qts19.9 L
- Fuel Type
- LP gas
- Cylinders
- 6
- Cooling
- liquid-cooled vertical L-head
Engine Options
International Harvester 4.3L 6-cyl gasoline
International Harvester 4.6L 6-cyl diesel
International Harvester 4.3L 6-cyl LP gas
- Fuel Tank
- 33 gal (gas/diesel)124.9 L
- Fuel Tank
- 37.5 gal (LP gas)141.9 L
Engine Options
International Harvester 4.3L 6-cyl gasoline
International Harvester 4.6L 6-cyl diesel
International Harvester 4.3L 6-cyl LP gas
660 / 03
Gears & controls
Transmission (Option 1)
- Transmission
- sliding gear
- Gears
- 5 forward and 1 reverse
- Oil Capacity
- 64 qts60.6 L
- Speeds Description
- With 18.4/15-34 rear tires.
Transmission (Option 2)
The Torque Amplifier (TA) provides a clutchless shift-on-the-move between direct drive (DD) and the lower TA speed.
- Transmission
- Torque Amplifier
- Gears
- 10 forward and 2 reverse
- Oil Capacity
- 64 qts60.6 L
- Speeds Description
- With 18.4/15-34 rear tires.
Transmission Options
5-speed
10-speed
660 / 04
Size. Stance. Footprint.
Dimensions
- Length
- 142.6 in362 cm
- Width
- 78 in198 cm
- Height
- 74 in187 cm
- Wheelbase
- 85.5 in217 cm
- Ground clearance
- 19.7 in50 cm
Dimensions And Tires
- Wheelbase
- 85.5 inches217 cm
- Weight
- 9635 to 9875 pounds
- Front Tire
- 7.50-18
- Rear Tire
- 18.4/15-34
Serial Number Location
Right side of clutch housing
Tires And Tracks
- Front Ag
- 7.50-18
- Rear Ag
- 18.4/15-34
- Industrial Rear
- 23.1/18-26
- Industrial Rear
- 16.9/14-34
660 / 05
Tractor Photos
See it in action
Videos
Watch International Harvester 660 videos from their original YouTube creators.
660 / 07
Tests (NTTL)
Tractor Tests
NTTL 715: diesel TA 2WD
NTTL 721: gasoline TA 2WD
NTTL 722: LP gas TA 2WD
Nebraska Tractor Test 715
Diesel TA 2WDAugust 31 - September 5, 1959
PTO performance
Drawbar performance
Gear 2-TA used for pull test.
- Id
- 715
- Power At Rated Engine Speed
- 78.78 hp58.7 kW
- Fuel Use
- 5.5 gal/hour20.8 l/hour
- Fuel Use
- 5.2 gal/hour19.7 l/hour
- Max Power
- 64.43 hp48.0 kW
- Max Pull
- 11,046 lbs5010 kg
Nebraska Tractor Test 721
Gasoline TA 2WDOctober 1 - 12, 1959
PTO performance
Drawbar performance
- Id
- 721
- Power At Rated Engine Speed
- 81.39 hp60.7 kW
- Fuel Use
- 6.4 gal/hour24.2 l/hour
- Fuel Use
- 6.3 gal/hour23.8 l/hour
- Max Power
- 70.21 hp52.4 kW
Nebraska Tractor Test 722
LP gas TA 2WDOctober 3 - 12, 1959
PTO performance
Drawbar performance
- Id
- 722
- Power At Rated Engine Speed
- 80.63 hp60.1 kW
- Fuel Use
- 8.9 gal/hour33.7 l/hour
- Fuel Use
- 8.8 gal/hour33.3 l/hour
- Max Power
- 69.66 hp51.9 kW