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Manufacturer-sourced values side by side. No performance equivalence or ranking is applied across different machine classes.

FeatureInternational Harvester 666TractorCase 1410Tractor
Tractor TypeUtility TractorUtility Tractor
Weight3200.0 kg3220.0 kg
Transmission TypePartial power shift with dry disc clutchPartial power shift
Years Made1972-19761976-1980
Engine ModelInternational Harvester C291David Brown
Engine Type4-stroke, liquid-cooled, inline4-stroke, liquid-cooled, inline
Fuel TypeGasolineDiesel
Cylinders64
Displacement4767 cc3589 cc
Bore9.50 cm10.01 cm
Stroke11.20 cm11.40 cm
Rear PTO TypeIndependentIndependent
Rear PTO Speed540 RPM540 or 1000 RPM
Compression Ratio7.5:1—
Battery12 V—
StarterElectricElectric
Wheelbase261.0 cm228.0 cm
Transmission ModelTorque-AmplifierHydra-Shift
Gears10 forward and 2 reverse12 forward and 4 reverse
Chassis4×2 2WD4×2 2WD or 4×4 MFWD 4WD
Max. Travel Speed4.8 km/h—
BrakesDry disc—
Drawbar CategoryIIII
Cabin TypeOpen operator station or Two-post ROPSOpen operator station or ROPS.
Steering TypeHydrostatic power—
Front TiresAg: 7.50-167.50-16
Rear TiresAg: 15.5-3818.4-34
Pump Flow—30.3 LPM
Fuel Tank Capacity—38.3 l
Coolant Capacity—14.2 l
Hydraulic Capacity—13.0 l
Hydraulic Type—Open
Valves—1
Sourceheavyequipments.net archive (imported 2026-10)heavyequipments.net archive (imported 2026-10)
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