International Harvester tractor · 1963-1967

International Harvester 706 Tractor

The International Harvester 706 is a 1963-1967 standard-tread tractor with 67.46 hp tested drawbar power and 76.56 hp tested PTO power. It was offered with several six-cylinder engine choices, 8- or 16-speed transmissions, and optional MFWD.

Production years

1963-1967

Engine

International Harvester 6-cylinder, with 4.3L or 4.8L gasoline and 4.6L or 5.1L diesel options

Power

76.56 hp tested PTO; 67.46 hp tested drawbar

Weight, approximate

8,100-9,160 lb

International Harvester 706 specifications

Production years	1963-1967
Engine	International Harvester 6-cylinder, with 4.3L or 4.8L gasoline and 4.6L or 5.1L diesel options
Power	76.56 hp tested PTO; 67.46 hp tested drawbar
Transmission	8-speed or 16-speed
Weight, approximate	8,100-9,160 lb
Fuel type	Gasoline or diesel, depending on engine
Drive and PTO	2WD standard, MFWD optional; independent 540/1000 rpm PTO

What the 706 is used for

The 706 is appropriate for vintage tillage, hay equipment, drawbar work, and PTO jobs that fit a roughly 76 hp PTO tractor. It was sold as a standard-tread model, while related Farmall 706 versions served row-crop applications.

Available Fast Hitch or three-point hitch equipment affects implement choice, so confirm the individual tractor's configuration. Optional MFWD and the 16-speed transmission can materially change how a particular tractor works in the field.

Why the International Harvester 706 stands out

The 706 combined a broad range of engine choices with tested PTO power of 76.56 hp. Its independent 540/1000 rpm PTO, optional Fast Hitch or three-point hitch, and redesigned Torque Amplifier option gave it considerable versatility for a 1960s tractor.

Buying a used International Harvester 706

Identify the exact engine, hitch, drive, and transmission before valuing a 706 because these vary substantially. Test the Torque Amplifier through its full range without slipping or freewheeling, then check hydraulic disc brakes, steering, PTO engagement, and the condition of the chosen engine's cooling and fuel systems.

International Harvester 706 frequently asked questions

How much PTO horsepower does an IH 706 have?

TractorData reports 76.56 hp tested PTO power.

Was four-wheel drive available on the IH 706?

Yes. MFWD four-wheel drive was optional, while two-wheel drive was standard.

What PTO speeds does the IH 706 have?

It has an independent PTO with 540 and 1000 rpm speeds.

Specifications are commonly cited figures for general reference; exact figures vary by year and serial number, so confirm against TractorData.com and the machine's records. Values and prices of used tractors vary by condition and region. Page updated Aug 4, 2026.

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