Head to head · Utility

Allis Chalmers 4W-305 vs Allis Chalmers 7580

Allis Chalmers 4W-305 Tractor
Allis ChalmersModel A

Allis Chalmers 4W-305

Utility

power
305 hp
displacement
731 ci
Cylinders
6
Forward gears
20
Full 4W-305 specs
Image not recorded
Allis ChalmersModel B

Allis Chalmers 7580

Utility

power
186 hp
displacement
426 ci
Cylinders
6
Forward gears
20
Full 7580 specs
Allis ChalmersAllis Chalmers 4W-305
vs
Allis ChalmersAllis Chalmers 7580

How they compare

Headline specs vs. the whole Utility

n = 4,321–5,720

Engine Power

▲ 4W-305 higher · +119 hp (+64%)
4W-305305 hp
7580186 hp
Median Utility Tractor55 hp

4W-305 is in the 97th percentile; 7580 is in the 94th · 5,383 models

Engine Displacement

▲ 4W-305 higher · +305 ci (+72%)
4W-305731 ci
7580426 ci
Median Utility Tractor183 ci

4W-305 is in the 96th percentile; 7580 is in the 92nd · 5,580 models

Cylinders

= Effectively tied
4W-3056
75806
Median Utility Tractor4

4W-305 is in the 93rd percentile; 7580 is in the 93rd · 5,720 models

Forward Gears

= Effectively tied
4W-30520
758020
Median Utility Tractor12

4W-305 is in the 86th percentile; 7580 is in the 86th · 4,941 models

4W-305 (A)7580 (B)Median Utility Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers 4W-305Allis Chalmers 7580Difference
ManufacturerAllis ChalmersAllis ChalmersSame
Model4W-3057580—
CategoryUtilityUtilitySame

Engine

SpecAllis Chalmers 4W-305Allis Chalmers 7580Difference
ManufacturerAllis ChalmersAllis ChalmersSame
Model6120T3750 Mark II—
Power Output305hp186hp▲ 4W-305+119 hp · +64%
Rated RPM2,300RPM2,550RPM▲ 7580+250 RPM · +11%
Cylinders66Same
Displacement731ci426ci▲ 4W-305+305 ci · +72%
Bore5.3in4.3in▲ 4W-305+1 in · +23%
Stroke5.6in5in▲ 4W-305+0.6 in · +12%

Transmission

SpecAllis Chalmers 4W-305Allis Chalmers 7580Difference
TypeTwo-speed power shiftPartial power shift—

Dimensions & Weight

SpecAllis Chalmers 4W-305Allis Chalmers 7580Difference
Length285in225in▲ 4W-305+60 in · +27%
WidthNot recorded95.5in—
Height139in150in▲ 7580+11 in · +8%
Operating Weight27,100lb25,000lb▲ 4W-305+2,100 lb · +8%

Hydraulics

SpecAllis Chalmers 4W-305Allis Chalmers 7580Difference
System TypeClosed center load-sensingClosed center—
Steering TypeHydraulic powerHydrostatic power—

Power Take-off (PTO)

SpecAllis Chalmers 4W-305Allis Chalmers 7580Difference
TypeIndependentIndependentSame
Speed 11,000rpm540rpm▲ 4W-305+460 rpm · +85%

Tires

SpecAllis Chalmers 4W-305Allis Chalmers 7580Difference
Front Tire SizeNot recorded23.1-30—
Rear Tire SizeNot recorded23.1-30—

Hitch & Towing

SpecAllis Chalmers 4W-305Allis Chalmers 7580Difference
Hitch TypeThree-Point HitchIII—
Hitch CategoryIII/IVCategory 3—
Hitch PositionRearRearSame

Chassis & Drive

SpecAllis Chalmers 4W-305Allis Chalmers 7580Difference
Chassis Type4x4 articulated 4WD4x4 articulated 4WDSame
Drive Type4WD4WDSame
Steering TypeHydraulic powerHydrostatic power—
Brake TypeNot recordedHydraulic wet discs—

Electrical

SpecAllis Chalmers 4W-305Allis Chalmers 7580Difference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers 4W-305Allis Chalmers 7580Difference
Coolant18gal9.5gal▲ 4W-305+8.5 gal · +89%

Operator Station

SpecAllis Chalmers 4W-305Allis Chalmers 7580Difference
TypeCabAcousta cab—

Category context

Both models against the field

Engine Power

median 55 hp
A · 97th percentile (305 hp)B · 94th percentile (186 hp)

Engine Displacement

median 183 ci
A · 96th percentile (731 ci)B · 92nd percentile (426 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 · 97th percentile (27,100 lb)B · 96th percentile (25,000 lb)
A · 4W-305B · 7580Median Utility Tractor
Full spec pageAllis Chalmers 4W-305Full spec pageAllis Chalmers 7580