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

FeatureAllis Chalmers 4W-305TractorJohn Deere 8520Tractor
Tractor TypeFarm TractorRow-Crop Tractor
Horsepower227.5 kW249.8 kW
Weight9900.0 kg10795.0 kg
Years Made1982-19852002-2005
Engine ModelAllis ChalmersJohn Deere
Engine Type4-stroke, liquid-cooled, inline4-stroke, liquid-cooled, inline
Fuel TypeDieselDiesel
Cylinders66
Displacement11980 cc8128 cc
Rear PTO TypeIndependentIndependent with hydraulic wet disc clutch
Rear PTO Speed1000 RPM1.000 RPM
Battery12 VTwo 12V, CCA 925A
StarterElectricElectric
Wheelbase320.0 cm298.0 cm
Fuel Tank Capacity757.0 l605.6 l
Coolant Capacity68.1 l34.0 l
Gears20 forward and 4 reverse16 forward and 4 reverse
Chassis4×4 4WD4×4 MFWD 4WD
Drawbar CategoryIII/IVIIIN
Cabin TypeCabCab
Steering TypeHydraulic powerHydrostatic power
Front TiresAg: 18.4-38—
Rear TiresAg: 18.4-38Ag: 18.4R46
Lift Capacity—4990.0 kg
Transmission Type—Full power shift with hydraulic wet disc clutch
Length—538.0 cm
Pump Flow—113.6 LPM
Bore—11.61 cm
Stroke—12.90 cm
Rated RPM—2200 RPM
Compression Ratio—16.5:1
Height—310.0 cm
Oil Capacity—30.9 l
Transmission Oil Capacity—150.0 l
Hydraulic Capacity—150.0 l
Front Hubs Capacity—4.0 L
Front Diffrential Case Capacity—13.4 l
Transmission Model—John Deere PowerShift
Max. Travel Speed—10.9 km/h
Brakes—Hydraulic wet disc
Hydraulic Type—Closed center pressure-flow compensated
Total Flow—160.9 LPM
Working Pressure—199.9 bar
Valves—5
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