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Years in Production / 1971–1976
Farmall
966
Explore the specifications, hardware, and original references for the Farmall 966.
113hp
Source index power
MFWD Optional
Drive
1971–1976
Production years
Farmall
Manufacturer
966 / 01
At a glance
Production
Row-Crop tractor
Built in Rock Island, Illinois, USA
Original price was $18,000 in 1976
- Manufacturer
- Farmall (a part of International Harvester)
- Total Built
- 21,017
Capacity
- Fuel
- 37 gal140.0 L
- Hydraulic System
- 22.5 gal85.2 L
Hydraulics
- Type
- open center
- Capacity
- 22.5 gal85.2 L
- Pressure
- 2000 psi137.9 bar
- Valves
- 1 to 4
- Pump Flow
- 12 gpm45.4 lpm
- Total Flow
- 21 gpm79.5 lpm
- Steering Flow
- 9 gpm34.1 lpm
- Steering Press
- 1550 psi106.9 bar
Hitch
- Rear Type
- II
- Rear Lift At24610mm
- 4400 lbs1995 kg
- Type
- IH Fast Hitch
- Rear Lift
- 5000 lbs (at 24 inches)2268 kg
Pto
- Rear Pto
- independent
- Rear Type
- 540/1000
Electrical
- Charging Amps
- 32
- Batteries
- 2
- Battery Volts
- 6
- Battery Ah
- 172
Mechanical
Two- or four-wheel drive
Power steering
Independent hydraulic dry disc brakes
Cab optional with heat and air-conditioning.
966 / 02
Under the hood
Engine Detail
International Harvester D414
diesel
6-cylinder
liquid-cooled
- Displacement
- 414 ci6.8 L
- Bore Stroke
- 4.30x4.75 inches109 x 121 mm
- Power
- 113 hp84.3 kW
- Air Cleaner
- dual dry elements
- Rated Rpm
- 2400 (early)
- Rated Rpm
- 2600 (late)
- Firing Order
- 1-5-3-6-2-4
- Oil Capacity
- 12 qts11.4 L
- Coolant Capacity
- 24 qts22.7 L
- Fuel Type
- diesel
- Cylinders
- 6
- Cooling
- liquid-cooled
966 / 03
Gears & controls
Transmission (Option 1)
Four gears each provided in high, low, and reverse ranges.
- Transmission Type
- gear
- Gears
- 8 forward and 4 reverse
- Clutch
- dry disc
- Oil Capacity
- 90 qts85.2 L
Transmission (Option 2)
The Torque Amplifier (TA) provides a shift-on-the-move underdrive to the standard transmission. In any gear and range, the transmission can be shifted from direct drive (DD) to the slower TA speed by simply pulling the TA lever back. No clutching or stopping is needed.
- Transmission
- Torque Amplifier
- Transmission Type
- two-speed power shift
- Gears
- 16 forward and 8 reverse
- Clutch
- dry disc
Transmission (Option 3)
The hydrostatic transmission option ended in 1973 when the Hydro 100 began production.
- Transmission Type
- hydrostatic
- Gears
- infinite forward and reverse
966 / 04
Size. Stance. Footprint.
Dimensions
- Length
- 165 in419 cm
- Width
- 98 in248 cm
- Height
- 105 in266 cm
- Wheelbase
- 105 in266 cm
- Ground clearance
- 14 in35 cm
Dimensions And Tires
- Wheelbase
- 105 inches266 cm
- Weight
- 11116 to 11700 pounds
- Front Tire
- 9.5L-15
- Rear Tire
- 18.4-34
Tires And Tracks
- Front Ag
- 9.5L-15
- Rear Ag
- 18.4-34
966 / 05
Tractor Photos
See it in action
Videos
Watch Farmall 966 videos from their original YouTube creators.
966 / 07
Tests (NTTL)
Nebraska Tractor Test 1082
2400rpm diesel gear/TA 2WDOctober 5 - 19, 1971
PTO performance
Drawbar performance
Gear 1-Hi-TA used for power test.
Gear 3-Lo-TA used for pull test.
- Id
- 1082
- Power At Rated Engine Speed
- 96.04 hp71.6 kW
- Fuel Use
- 6.5 gal/hour24.6 l/hour
- Fuel Use
- 5.9 gal/hour22.3 l/hour
- Fuel Use
- 6.4 gal/hour24.2 l/hour
- Power At Rated Pto Speed
- 93.5 hp69.7 kW
- Max Power
- 80.4 hp60.0 kW
- Max Pull
- 10,041 lbs4554 kg
Nebraska Tractor Test 1095
Diesel hydrostatic 2WDApril 28 - May 12, 1972
PTO performance
Drawbar performance
Gear 5.4 MPH used for power test.
Gear 2.77 MPH used for pull test.
- Id
- 1095
- Power At Rated Engine Speed
- 91.38 hp68.1 kW
- Fuel Use
- 7.2 gal/hour27.3 l/hour
- Fuel Use
- 6.4 gal/hour24.2 l/hour
- Fuel Use
- 7.1 gal/hour26.9 l/hour
- Power At Rated Pto Speed
- 88.29 hp65.8 kW
- Max Power
- 68.08 hp50.8 kW
- Max Pull
- 8,909 lbs4041 kg
Nebraska Tractor Test 1123
2600rpm diesel gear/TA 2WDApril 20 - May 17, 1973
PTO performance
Drawbar performance
Gear 1-Hi-TA used for power test.
Gear 3-Lo-TA used for pull test.
- Id
- 1123
- Power At Rated Engine Speed
- 100.80 hp75.2 kW
- Fuel Use
- 6.9 gal/hour26.1 l/hour
- Fuel Use
- 6.5 gal/hour24.6 l/hour
- Power At Rated Pto Speed
- 101.52 hp75.7 kW
- Max Power
- 85.21 hp63.5 kW
- Max Pull
- 10,036 lbs4552 kg