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

FeatureJohn Deere 4420TractorAllis Chalmers 185Tractor
Tractor TypeRow-Crop TractorRow-Crop Tractor
Horsepower76.1 kW—
Weight3760.0 kg3950.0 kg
Length426.0 cm401.0 cm
Years Made1970-19751970-1981
Engine ModelJohn DeereAllis-Chalmers
Engine Type4-stroke, liquid-cooled, inline4-stroke, liquid-cooled, inline
Fuel TypeGasolineDiesel
Cylinders66
Displacement5391 cc4933 cc
Bore10.21 cm9.80 cm
Stroke11.00 cm10.79 cm
Rear PTO TypeIndependentContinuous
Rear PTO Speed540 /1000 RPM540; 540/1000 RPM
Torque Power1400 RPM—
Torque Speed351.2 N·m—
Rated RPM2500 RPM—
Compression Ratio16.7:116.0:1
BatteryTwo 6V12 V
StarterElectricElectric
Height209.0 cm194.0 cm
Wheelbase255.0 cm251.0 cm
Fuel Tank Capacity129.1 l93.0 l
Oil Capacity13.0 l10.5 l
Coolant Capacity19.5 l16.0 l
Transmission ModelSyncro-RangeAllis-Chalmers Power Director
Final DrivePlanetary—
Gears8 forward and 2 reverse8 forward and 2 reverse
Chassis4×2 2WD4×2 2WD
Max. Travel Speed10.6 km/h25.8 km/h
BrakesHydraulic wet discDifferential mechanical band and disc
Drawbar CategoryIIII
Cabin TypeOpen operator stationOpen operator station. Two-post ROPS and canopy
Steering TypePowerHydrostatic power
Front TiresAg: 10.00×16Ag: 7.50-16; 6.50-16; 7.50-20; 9.5L-15
Rear TiresAg: 23.1×30Ag: 16.9-28; 13.6-38; 15.5-38; 18.4-28; 18.4-30
Hydraulic TypeClosed centerOpen
Transmission Type—Partial power shift
Width—194.0 cm
Transmission Oil Capacity—7.4 l
Hydraulic Capacity—24.6 l
Total Flow—75.7 LPM
Valves—2
Sourceheavyequipments.net archive (imported 2026-10)heavyequipments.net archive (imported 2026-10)
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Side-by-side specification comparisons generated from the manufacturer-sourced model files. · 7,051