SPECS / COMPARISON

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

Feature	John Deere 7830Tractor	Allis Chalmers 440Tractor
Tractor Type	Row-Crop Tractor	Farm Tractor
Horsepower	152.9 kW	162.6 kW
Weight	8042.0 kg	9180.0 kg
Lift Capacity	6350.0 kg	—
Transmission Type	Infinitely Variable Transmission	—
Length	571.0 cm	579.0 cm
Years Made	2007-2011	1973-1977
Engine Model	John Deere	Cummins 555C
Engine Type	4-stroke, liquid-cooled, inline	4-stroke, liquid-cooled, V
Fuel Type	Diesel	Diesel
Cylinders	6	8
Displacement	6784 cc	9094 cc
Bore	10.59 cm	11.71 cm
Stroke	12.70 cm	10.49 cm
Rear PTO Type	Independent with hydraulic wet disc clutch	—
Rear PTO Speed	1000, 540/1000 RPM	—
Rated RPM	2100 RPM	2800 RPM
Compression Ratio	17.0:1	17.0:1
Battery	Two 12V, CCA 925A	—
Starter	Electric	Electric
Height	310.0 cm	353.0 cm
Wheelbase	286.0 cm	—
Ground Clearance	69.0 cm	—
Fuel Tank Capacity	390.0 l	—
Oil Capacity	26.0 l	—
Hydraulic Capacity	107.9 l	—
Gears	Infinite forward and reverse	10 forward and 2 reverse
Chassis	4×4 MFWD 4WD	4×4 MFWD 4WD
Max. Travel Speed	43.5 km/h	—
Brakes	Hydraulic wet disc	Hydraulic disc
Drawbar Category	III	III/IV
Cabin Type	Cab	Cab , available air-conditioning
Steering Type	Power	Articulated hydraulic power
Front Tires	Ag: 420/90R30	Ag: 23.1-26
Rear Tires	Ag: 480/80R46	Ag: 23.1-26
Hydraulic Type	Closed center load-sensing	Open center
Total Flow	170.3 LPM	140.1 LPM
SCV Flow	113.6 LPM	—
Working Pressure	199.9 bar	137.9 bar
Valves	2 to 7	3
Pump Flow	—	79.5 LPM
Width	—	266.0 cm
Transmission Model	—	Eaton
Final Drive	—	Outboard planetary
Steering Flow	—	60.6 LPM
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