Head to head · Utility

Allis Chalmers 8550 vs Steiger Cougar II ST-300

Allis Chalmers 8550 Tractor
Allis ChalmersModel A

Allis Chalmers 8550

Utility

power
300 hp
displacement
731 ci
Cylinders
6
Forward gears
20
Full 8550 specs
Allis ChalmersAllis Chalmers 8550
vs
SteigerSteiger Cougar II ST-300

How they compare

Headline specs vs. the whole Utility

n = 3,933–5,720

Engine Power

= Effectively tied
8550300 hp
Cougar II ST-300300 hp
Median Utility Tractor55 hp

8550 is in the 97th percentile; Cougar II ST-300 is in the 97th · 5,383 models

Engine Displacement

▲ 8550 higher · +93 ci (+15%)
8550731 ci
Cougar II ST-300638 ci
Median Utility Tractor183 ci

8550 is in the 96th percentile; Cougar II ST-300 is in the 95th · 5,580 models

Cylinders

= Effectively tied
85506
Cougar II ST-3006
Median Utility Tractor4

8550 is in the 93rd percentile; Cougar II ST-300 is in the 93rd · 5,720 models

Forward Gears

▲ 8550 higher · +10 (+100%)
855020
Cougar II ST-30010
Median Utility Tractor12

8550 is in the 86th percentile; Cougar II ST-300 is in the 39th · 4,941 models

8550 (A)Cougar II ST-300 (B)Median Utility Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers 8550Steiger Cougar II ST-300Difference
ManufacturerAllis ChalmersSteiger—
Model8550Cougar II ST-300—
CategoryUtilityUtilitySame

Engine

SpecAllis Chalmers 8550Steiger Cougar II ST-300Difference
ManufacturerAllis ChalmersCaterpillar—
Model6120T3006T—
Power Output300hp300hpSame
Rated RPM2,500RPM2,200RPM▲ 8550+300 RPM · +14%
Cylinders66Same
Displacement731ci638ci▲ 8550+93 ci · +15%
Bore5.3in4.8in▲ 8550+0.5 in · +10%
Stroke6.3in6in▲ 8550+0.3 in · +5%

Transmission

SpecAllis Chalmers 8550Steiger Cougar II ST-300Difference
TypePartial Power ShiftManual—

Dimensions & Weight

SpecAllis Chalmers 8550Steiger Cougar II ST-300Difference
Length285in244in▲ 8550+41 in · +17%
Width95.5in96in▲ Cougar II ST-300+0.5 in · <1%
Height139in133in▲ 8550+6 in · +5%
Operating Weight27,040lb22,000lb▲ 8550+5,040 lb · +23%

Hydraulics

SpecAllis Chalmers 8550Steiger Cougar II ST-300Difference
System TypeClosed CenterOpen Center—
Steering TypeHydrostatic PowerNot recorded—

Power Take-off (PTO)

SpecAllis Chalmers 8550Steiger Cougar II ST-300Difference
TypeIndependentNot recorded—
Speed 11,000rpmNot recorded—

Hitch & Towing

SpecAllis Chalmers 8550Steiger Cougar II ST-300Difference
Hitch TypeThree-Point HitchNot recorded—
Hitch CategoryIV/IIICategory 3—

Chassis & Drive

SpecAllis Chalmers 8550Steiger Cougar II ST-300Difference
Chassis Type4x4 Articulated 4WD4x4 4WD—
Drive Type4WD4WDSame
Steering TypeHydrostatic PowerNot recorded—
Brake TypeHydraulic Wet DiscsNot recorded—

Electrical

SpecAllis Chalmers 8550Steiger Cougar II ST-300Difference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers 8550Steiger Cougar II ST-300Difference
Coolant18gal15gal▲ 8550+3 gal · +20%

Operator Station

SpecAllis Chalmers 8550Steiger Cougar II ST-300Difference
TypeAcousta Cab II with heat and air-conditioningCab—

Category context

Both models against the field

Engine Power

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

Engine Displacement

median 183 ci
A · 96th percentile (731 ci)B · 95th percentile (638 ci)

Cylinders

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

Forward Gears

median 12
A · 86th percentile (20)B · 39th percentile (10)

Operating Weight

median 5,303 lb
A · 96th percentile (27,040 lb)B · 95th percentile (22,000 lb)
A · 8550B · Cougar II ST-300Median Utility Tractor
Full spec pageAllis Chalmers 8550Full spec pageSteiger Cougar II ST-300