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International Harvester 666 Agricultural Tractors

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SPECS / AGRICULTURAL TRACTORS

International Harvester 666 Specs

International Harvester 666 agricultural tractor specifications: tractor type Utility Tractor, weight 3200.0 kg, transmission type Partial power shift with dry disc clutch, years made 1972-1976.

Manufacturer specifications

SpecificationMetricImperial
Tractor TypeUtility Tractor
Weight3200.0 kg7054.8 lbs
Transmission TypePartial power shift with dry disc clutch
Years Made1972-1976
Engine ModelInternational Harvester C291
Engine Type4-stroke, liquid-cooled, inline
Fuel TypeGasoline
Cylinders6
Displacement4767 cc290.9 cu in.
Bore9.50 cm3.74 in.
Stroke11.20 cm4.41 in.
Rear PTO TypeIndependent
Rear PTO Speed540 RPM
Compression Ratio7.5:1
Battery12 V
StarterElectric
Wheelbase261.0 cm102.8 in.
Transmission ModelTorque-Amplifier
Gears10 forward and 2 reverse
Chassis4×2 2WD
Max. Travel Speed4.8 km/hForward: 16.5 MPH (26.5 km/h) Reverse: 3.0 MPH
BrakesDry disc
Drawbar CategoryII
Cabin TypeOpen operator station or Two-post ROPS
Steering TypeHydrostatic power
Front TiresAg: 7.50-16
Rear TiresAg: 15.5-38

Source: heavyequipments.net archive (imported 2026-10). Values may vary by variant and production year; seller claims are shown separately on the listing page.

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