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Tractor · 1971Unverified

Farmall 966

Name: Farmall 966
Brand: Farmall

Farmall 966 — 66 Series · 96 hp. Reference specifications; pending source verification.

The Farmall 966 is a mid-range tractor with a power rating of approximately 96 hp. It was produced between 1971 and 1976 and features a 6-cylinder diesel liquid-cooled engine paired with four-wheel drive and a hydrostatic transmission. The tractor has an operating weight of 5,070 to 5,306 kilograms. It is suitable for operations spanning 80 to 324 hectares.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

96 hp

Max power

60.0 kW

Weight

11116 to 11700 pounds

Catalogue coverage

Variants represented

Richest spec table

115 rows

Recorded power

96 hp

Transmissions

8-speed gear

Production years

1971-1976

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerFarmall (a part of International Harvester)Reference

Row-Crop tractorReference

Built in Rock Island, Illinois, USAReference

Total built21,017Reference

Original price was $18,000 in 1976Reference

Two- or four-wheel driveReference

Power steeringReference

Independent hydraulic dry disc brakesReference

Cab optional with heat and air-conditioning.Reference

Engine

International Harvester 6.8L 6-cyl dieselReference

Engine84.3 kWReference

Drawbar (claimed)62.6 kWReference

Drawbar (tested)63.5 kWReference

International Harvester D414Reference

dieselReference

6-cylinderReference

liquid-cooledReference

Displacement6.8 LReference

Bore/Stroke109 x 121 mmReference

Power84.3 kWReference

Air cleanerdual dry elementsReference

Rated RPM2400 (early)Reference

Rated RPM2600 (late)Reference

Firing order1-5-3-6-2-4Reference

Oil capacity11.4 LReference

Coolant capacity22.7 LReference

Power at rated engine speed71.6 kWReference

Max power60.0 kWReference

Power at rated engine speed68.1 kWReference

Max power50.8 kWReference

Power at rated engine speed75.2 kWReference

Max power63.5 kWReference

Transmission

8-speed gearReference

16-speed two-speed power shiftReference

hydrostaticReference

TypegearReference

Gears8 forward and 4 reverseReference

Clutchdry discReference

Oil capacity85.2 LReference

Four gears each provided in high, low, and reverse ranges.Reference

TransmissionTorque AmplifierReference

Typetwo-speed power shiftReference

Gears16 forward and 8 reverseReference

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.Reference

TypehydrostaticReference

Gearsinfinite forward and reverseReference

The hydrostatic transmission option ended in 1973 when the Hydro 100 began production.Reference

PTO & Hydraulics

PTO (claimed)70.8 kWReference

PTO (tested)75.2 kWReference

Hydraulic system85.2 LReference

Typeopen centerReference

Capacity85.2 LReference

Pressure137.9 barReference

Valves1 to 4Reference

Pump flow45.4 lpmReference

Total flow79.5 lpmReference

Steering flow34.1 lpmReference

Steering press.106.9 barReference

Rear TypeIIReference

Rear lift (at 24"/610mm)1995 kgReference

TypeIH Fast HitchReference

Rear lift2268 kgReference

Rear PTOindependentReference

Rear PTO Type540/1000Reference

Power at rated PTO speed69.7 kWReference

Power at rated PTO speed65.8 kWReference

Power at rated PTO speed75.7 kWReference

Capacities

Fuel140.0 LReference

Dimensions

Wheelbase266 cmReference

Weight11116 to 11700 poundsReference

Front tire9.5L-15Reference

Rear tire18.4-34Reference

Ag front9.5L-15Reference

Ag rear18.4-34Reference

Length419 cmReference

Width248 cmReference

Height (exhaust)266 cmReference

Ground clearance35 cmReference

Operating5042 kgReference

Operating5307 kgReference

Ballasted6123 kgReference

966 Serial Numbers

Location:Clutch housing, left sideReference

19717101Reference

197211815Reference

197317794Reference

197422526Reference

197528119Reference

197631772Reference

FAQ: How to read a serial number table.Reference

Electrical

Charging amps32Reference

Batteries2Reference

Battery volts6Reference

Battery AH172Reference

Test results

NTTL 1082: 2400rpm diesel gear/TA 2WDReference

NTTL 1095: diesel hydrostatic 2WDReference

NTTL 1123: 2600rpm diesel gear/TA 2WDReference

2400rpm diesel gear/TA 2WDOctober 5 - 19, 1971Link: Nebraska Tractor Test 1082 fileReference

PTO performanceReference

Fuel use24.6 l/hourReference

Fuel use22.3 l/hourReference

Drawbar performanceReference

Fuel use24.2 l/hourReference

Gear 1-Hi-TA used for power test.Reference

Max pull4554 kgReference

Gear 3-Lo-TA used for pull test.Reference

Diesel hydrostatic 2WDApril 28 - May 12, 1972Link: Nebraska Tractor Test 1095 fileReference

Fuel use27.3 l/hourReference

Fuel use26.9 l/hourReference

Gear 5.4 MPH used for power test.Reference

Max pull4041 kgReference

Gear 2.77 MPH used for pull test.Reference

2600rpm diesel gear/TA 2WDApril 20 - May 17, 1973Link: Nebraska Tractor Test 1123 fileReference

Fuel use26.1 l/hourReference

Max pull4552 kgReference

Speeds

With 18.4-34 rear tires.Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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