Head to head · Utility

Allis Chalmers 7580 vs Allis Chalmers 8550

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Allis ChalmersModel A

Allis Chalmers 7580

Utility

power
186 hp
displacement
426 ci
Cylinders
6
Forward gears
20
Full 7580 specs
Allis Chalmers 8550 Tractor
Allis ChalmersModel B

Allis Chalmers 8550

Utility

power
300 hp
displacement
731 ci
Cylinders
6
Forward gears
20
Full 8550 specs
Allis ChalmersAllis Chalmers 7580
vs
Allis ChalmersAllis Chalmers 8550

How they compare

Headline specs vs. the whole Utility

n = 3,933–5,720

Engine Power

▲ 8550 higher · +114 hp (+61%)
7580186 hp
8550300 hp
Median Utility Tractor55 hp

7580 is in the 94th percentile; 8550 is in the 97th · 5,383 models

Engine Displacement

▲ 8550 higher · +305 ci (+72%)
7580426 ci
8550731 ci
Median Utility Tractor183 ci

7580 is in the 92nd percentile; 8550 is in the 96th · 5,580 models

Cylinders

= Effectively tied
75806
85506
Median Utility Tractor4

7580 is in the 93rd percentile; 8550 is in the 93rd · 5,720 models

Forward Gears

= Effectively tied
758020
855020
Median Utility Tractor12

7580 is in the 86th percentile; 8550 is in the 86th · 4,941 models

7580 (A)8550 (B)Median Utility Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers 7580Allis Chalmers 8550Difference
ManufacturerAllis ChalmersAllis ChalmersSame
Model75808550—
CategoryUtilityUtilitySame

Engine

SpecAllis Chalmers 7580Allis Chalmers 8550Difference
ManufacturerAllis ChalmersAllis ChalmersSame
Model3750 Mark II6120T—
Power Output186hp300hp▲ 8550+114 hp · +61%
Rated RPM2,550RPM2,500RPM▲ 7580+50 RPM · +2%
Cylinders66Same
Displacement426ci731ci▲ 8550+305 ci · +72%
Bore4.3in5.3in▲ 8550+1 in · +23%
Stroke5in6.3in▲ 8550+1.3 in · +26%

Transmission

SpecAllis Chalmers 7580Allis Chalmers 8550Difference
TypePartial power shiftPartial Power ShiftSame

Dimensions & Weight

SpecAllis Chalmers 7580Allis Chalmers 8550Difference
Length225in285in▲ 8550+60 in · +27%
Width95.5in95.5inSame
Height150in139in▲ 7580+11 in · +8%
Operating Weight25,000lb27,040lb▲ 8550+2,040 lb · +8%

Hydraulics

SpecAllis Chalmers 7580Allis Chalmers 8550Difference
System TypeClosed centerClosed CenterSame
Steering TypeHydrostatic powerHydrostatic PowerSame

Power Take-off (PTO)

SpecAllis Chalmers 7580Allis Chalmers 8550Difference
TypeIndependentIndependentSame
Speed 1540rpm1,000rpm▲ 8550+460 rpm · +85%

Tires

SpecAllis Chalmers 7580Allis Chalmers 8550Difference
Front Tire Size23.1-30Not recorded—
Rear Tire Size23.1-30Not recorded—

Hitch & Towing

SpecAllis Chalmers 7580Allis Chalmers 8550Difference
Hitch TypeIIIThree-Point Hitch—
Hitch CategoryCategory 3IV/III—
Hitch PositionRearNot recorded—

Chassis & Drive

SpecAllis Chalmers 7580Allis Chalmers 8550Difference
Chassis Type4x4 articulated 4WD4x4 Articulated 4WDSame
Drive Type4WD4WDSame
Steering TypeHydrostatic powerHydrostatic PowerSame
Brake TypeHydraulic wet discsHydraulic Wet DiscsSame

Electrical

SpecAllis Chalmers 7580Allis Chalmers 8550Difference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers 7580Allis Chalmers 8550Difference
Coolant9.5gal18gal▲ 8550+8.5 gal · +89%

Operator Station

SpecAllis Chalmers 7580Allis Chalmers 8550Difference
TypeAcousta cabAcousta Cab II with heat and air-conditioning—

Category context

Both models against the field

Engine Power

median 55 hp
A · 94th percentile (186 hp)B · 97th percentile (300 hp)

Engine Displacement

median 183 ci
A · 92nd percentile (426 ci)B · 96th percentile (731 ci)

Cylinders

median 4
A · 93rd percentile (6)B · 93rd percentile (6)

Forward Gears

median 12
A · 86th percentile (20)B · 86th percentile (20)

Operating Weight

median 5,303 lb
A · 96th percentile (25,000 lb)B · 96th percentile (27,040 lb)
A · 7580B · 8550Median Utility Tractor
Full spec pageAllis Chalmers 7580Full spec pageAllis Chalmers 8550