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

Feature	John Deere 8640Tractor	International Harvester 4586Tractor
Tractor Type	Farm Tractor	Farm Tractor
Horsepower	205.1 kW	223.7 kW
Weight	12820.0 kg	11680.0 kg
Lift Capacity	3875.0 kg	—
Transmission Type	Partial power shift with hydraulic wet disc clutch	—
Length	567.0 cm	—
Pump Flow	124.9 LPM	71.9 LPM
Years Made	1979-1982	1976-1981
Engine Model	John Deere	International Harvester DV-800
Engine Type	4-stroke, liquid-cooled, inline	4-stroke, liquid-cooled, V
Fuel Type	Diesel	Diesel
Cylinders	6	8
Displacement	10140 cc	13077 cc
Bore	13.00 cm	13.49 cm
Stroke	12.70 cm	11.40 cm
Rear PTO Type	Independent	—
Rear PTO Speed	1000 RPM	—
Rated RPM	2100 RPM	2600 RPM
Compression Ratio	15.2:1	15.6:1
Battery	12 V	12 V
Starter	Electric	Electric
Height	321.0 cm	—
Wheelbase	317.0 cm	299.0 cm
Ground Clearance	46.0 cm	—
Fuel Tank Capacity	810.0 l	643.5 l
Oil Capacity	24.6 l	—
Coolant Capacity	45.4 l	—
Transmission Oil Capacity	155.2 l	—
Hydraulic Capacity	155.2 l	—
Transmission Model	John Deere Quad-Range	—
Gears	16 forward and 6 reverse	10 forward and 2 reverse
Chassis	4×4 MFWD 4WD	4×4 articulated 4WD
Max. Travel Speed	21.7 km/h	5.3 km/h
Brakes	Hydraulic wet disc	Hydraulic wet disc
Differential Lock	Hydraulic front and rear	—
Drawbar Category	III/IIIN	IV
Cabin Type	Cab	Cab with air-conditioning
Steering Type	Articulated power	Hydrostatic power
Front Tires	Ag: 18.4-34	Ag: 24.5-32
Rear Tires	Ag: 18.4-34	Ag: 24.5-32
Hydraulic Type	Closed center	—
Valves	2	—
Torque Power	—	1800 RPM
Torque Speed	—	983.1 N·m
Source	heavyequipments.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