Head to head · Utility

Allis Chalmers 8550 vs CaseIH Optum 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
CaseIH Optum 300 Tractor
CaseIHModel B

CaseIH Optum 300

Row Crop

power
300 hp
displacement
411 ci
Cylinders
6
Forward gears
Not recorded
Full Optum 300 specs
Allis ChalmersAllis Chalmers 8550
vs
CaseIHCaseIH Optum 300

How they compare

Headline specs vs. the whole Utility

n = 3,933–5,720

Engine Power

= Effectively tied
8550300 hp
Optum 300300 hp
Median Utility Tractor55 hp

8550 is in the 97th percentile; Optum 300 is in the 97th · 5,383 models

Engine Displacement

▲ 8550 higher · +320 ci (+78%)
8550731 ci
Optum 300411 ci
Median Utility Tractor183 ci

8550 is in the 96th percentile; Optum 300 is in the 91st · 5,580 models

Cylinders

= Effectively tied
85506
Optum 3006
Median Utility Tractor4

8550 is in the 93rd percentile; Optum 300 is in the 93rd · 5,720 models

Operating Weight

▲ 8550 higher · +3,891 lb (+17%)
855027,040 lb
Optum 30023,149 lb
Median Utility Tractor5,303 lb

8550 is in the 96th percentile; Optum 300 is in the 95th · 5,107 models

8550 (A)Optum 300 (B)Median Utility Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers 8550CaseIH Optum 300Difference
ManufacturerAllis ChalmersCaseIH—
Model8550Optum 300—
CategoryUtilityRow Crop—

Engine

SpecAllis Chalmers 8550CaseIH Optum 300Difference
ManufacturerAllis ChalmersFPT—
Model6120TNot recorded—
Power Output300hp300hpSame
Rated RPM2,500RPM2,100RPM▲ 8550+400 RPM · +19%
Cylinders66Same
Displacement731ci411ci▲ 8550+320 ci · +78%
Bore5.3in4.1in▲ 8550+1.2 in · +29%
Stroke6.3in5.2in▲ 8550+1.1 in · +21%

Transmission

SpecAllis Chalmers 8550CaseIH Optum 300Difference
TypePartial Power ShiftContinuously Variable Transmission (CVT)—

Dimensions & Weight

SpecAllis Chalmers 8550CaseIH Optum 300Difference
Length285in208in▲ 8550+77 in · +37%
Width95.5in119in▲ Optum 300+23.5 in · +25%
Height139in133in▲ 8550+6 in · +5%
Operating Weight27,040lb23,149lb▲ 8550+3,891 lb · +17%

Hydraulics

SpecAllis Chalmers 8550CaseIH Optum 300Difference
System TypeClosed CenterClosed center pressure flow compensating (PFC)—
Steering TypeHydrostatic PowerPower—

Power Take-off (PTO)

SpecAllis Chalmers 8550CaseIH Optum 300Difference
TypeIndependentNot recorded—
Speed 11,000rpmNot recorded—

Hitch & Towing

SpecAllis Chalmers 8550CaseIH Optum 300Difference
Hitch TypeThree-Point HitchNot recorded—
Hitch CategoryIV/IIIIII—
Hitch PositionNot recordedRear—

Chassis & Drive

SpecAllis Chalmers 8550CaseIH Optum 300Difference
Chassis Type4x4 Articulated 4WD4x4 MFWD 4WD—
Drive Type4WD4WDSame
Steering TypeHydrostatic PowerPower—
Brake TypeHydraulic Wet DiscsNot recorded—

Electrical

SpecAllis Chalmers 8550CaseIH Optum 300Difference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers 8550CaseIH Optum 300Difference
Coolant18galNot recorded—

Operator Station

SpecAllis Chalmers 8550CaseIH Optum 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 · 91st percentile (411 ci)

Cylinders

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

Operating Weight

median 5,303 lb
A · 96th percentile (27,040 lb)B · 95th percentile (23,149 lb)

Length

median 137 in
A · 99th percentile (285 in)B · 95th percentile (208 in)
A · 8550B · Optum 300Median Utility Tractor
Full spec pageAllis Chalmers 8550Full spec pageCaseIH Optum 300