Introduction
International Harvester 966 Row-Crop Tractor
The International Harvester 966 is a row-crop tractor produced between 1971 and 1976. Manufactured in Rock Island, Illinois, this model serves as a core piece of agricultural equipment designed for heavy-duty field operations, falling into the power class of 91 horsepower.
Engine and Performance
The tractor is powered by the International Harvester D414, a 6-cylinder liquid-cooled diesel engine with a displacement of 414 cubic inches (6.8 liters). It features a bore and stroke of 109 x 121 mm and utilizes a dual dry element air cleaner. The engine operates at a rated speed of 2400 RPM, which was later increased to 2600 RPM for late production models.
Transmission and Drive
The 966 offers three distinct transmission configurations to suit various operational needs. The standard gear transmission provides 8 forward and 4 reverse speeds. The Torque Amplifier (TA) option adds a two-speed power shift capability, resulting in 16 forward and 8 reverse speeds, allowing for shift-on-the-move underdrive without the need for clutching. A hydrostatic transmission option was also available prior to the introduction of the Hydro 100 series.
Hydraulics and Hitch
The hydraulic system is of the open-center type, delivering a total flow of 21 gpm (79.5 lpm), with 12 gpm dedicated to the pump flow and 9 gpm to steering. It supports between one and four valves. The rear hitch is a Category II type, featuring the IH Fast Hitch system, capable of a lift capacity of 5000 lbs (2268 kg) at 24 inches.
Mechanical and Dimensions
Built on a 105-inch wheelbase, the tractor features power steering and independent hydraulic dry disc brakes. The machine is available in both two-wheel and four-wheel drive configurations. Optional operator comfort features include a cab equipped with heating and air-conditioning systems.
Conclusion
With 21,017 units produced, the International Harvester 966 remains a reliable choice for farmers requiring a robust, multi-purpose row-crop tractor. Its combination of high-torque diesel power and versatile transmission options makes it well-suited for a wide range of pulling and implement-driven tasks.
Production Information of International Harvester, 966
- Original price was $18,000 in 1976
- Row-Crop tractor
- Built in Rock Island, Illinois, USA
| Manufacturer | International Harvester |
|---|---|
| Total built | 21,017 |
Dimension and Tires Information of International Harvester, 966
| Wheelbase | 105 inches [266 cm] |
|---|---|
| Ground clearance | 14 inches [35 cm] |
| Height (exhaust) | 105 inches [266 cm] |
| Length | 165 inches [419 cm] |
| Width | 98 inches [248 cm] |
| Ag front | 9.5L-15 |
|---|---|
| Ag rear | 18.4-34 |
Engine Specifications of International Harvester, 966
- International Harvester D414
- Liquid-cooled
- Diesel
- 6-cylinder
| Firing order | 1-5-3-6-2-4 |
|---|---|
| Displacement | 414 ci [6.8 L] |
| Air cleaner | Dual dry elements |
| Bore/Stroke | 4.30x4.75 inches [109 x 121 mm] |
| Coolant capacity | 24 qts [22.7 L] |
| Oil capacity | 12 qts [11.4 L] |
| Oil capacity(optional) | 2600 (late) |
| Rated RPM | 2400 (early) |
| Power | 91 hp [67.9 kW] |
Transmission Information of International Harvester, 966
Transmission variants 1
- Four gears each provided in high, low, and reverse ranges.
| Type | Gear |
|---|---|
| Oil capacity | 90 qts [85.2 L] |
| Gears | 8 forward and 4 reverse |
| Clutch | Dry disc |
Transmission variants 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 |
|---|---|
| Clutch | Dry disc |
| Type | Two-speed power shift |
| Gears | 16 forward and 8 reverse |
Transmission variants 3
- The hydrostatic transmission option ended in 1973 when the Hydro 100 began production.
| Type | Hydrostatic |
|---|---|
| Gears | Infinite forward and reverse |
- 8-speed gear
- 16-speed two-speed power shift
- Hydrostatic
Mechanical Specs of International Harvester, 966
- Two- or four-wheel drive
- Cab optional with heat and air-conditioning.
- Power steering
- Independent hydraulic dry disc brakes
Power Information of International Harvester, 966
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 540/1000 |
Hydraulics Specifications of International Harvester, 966
| Steering flow | 9 gpm [34.1 lpm] |
|---|---|
| Type | Open center |
| Pump flow | 12 gpm [45.4 lpm] |
| Valves | 1 to 4 |
| Capacity | 22.5 gal [85.2 L] |
| Steering press. | 1550 psi [106.9 bar] |
| Total flow | 21 gpm [79.5 lpm] |
| Pressure | 2000 psi [137.9 bar] |
Three-Point Hitch of International Harvester, 966
| Rear Type | II |
|---|---|
| Rear lift | 5000 lbs (at 24 inches) [2268 kg] |
| Rear lift (at 24"/610mm) | 4400 lbs [1995 kg] |
| Type | IH Fast Hitch |
Electrical System of International Harvester, 966
| Charging amps | 32 |
|---|---|
| Battery AH | 172 |
| Batteries | 2 |
| Battery volts | 6 |
Where it sits
With 91 HP, the International Harvester 966 sits just below Hydro 100 (115 HP) in International Harvester's range. Its power puts it in the 64th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the International Harvester 966 have?
The International Harvester 966 delivers 91 HP.
What years was the International Harvester 966 produced?
The International Harvester 966 was produced in 1971-1976.
What engine does the International Harvester 966 have?
The International Harvester 966 is powered by a Diesel, 6-cylinder engine.
What transmission does the International Harvester 966 use?
The International Harvester 966 uses a Gear transmission.
Is the International Harvester 966 4WD?
The International Harvester 966 is available in 2WD/4WD.