Head to head · Utility

Allis Chalmers 8550 vs Challenger MT665C

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
Image not recorded
ChallengerModel B

Challenger MT665C

Agricultural

power
290 hp
displacement
513 ci
Cylinders
6
Forward gears
Not recorded
Full MT665C specs
Allis ChalmersAllis Chalmers 8550
vs
ChallengerChallenger MT665C

How they compare

Headline specs vs. the whole Utility

n = 4,321–5,720

Engine Power

▲ 8550 higher · +10 hp (+3%)
8550300 hp
MT665C290 hp
Median Utility Tractor55 hp

8550 is in the 97th percentile; MT665C is in the 96th · 5,383 models

Engine Displacement

▲ 8550 higher · +218 ci (+42%)
8550731 ci
MT665C513 ci
Median Utility Tractor183 ci

8550 is in the 96th percentile; MT665C is in the 94th · 5,580 models

Cylinders

= Effectively tied
85506
MT665C6
Median Utility Tractor4

8550 is in the 93rd percentile; MT665C is in the 93rd · 5,720 models

Operating Weight

▲ 8550 higher · +1,245 lb (+5%)
855027,040 lb
MT665C25,795 lb
Median Utility Tractor5,303 lb

8550 is in the 96th percentile; MT665C is in the 96th · 5,107 models

8550 (A)MT665C (B)Median Utility Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers 8550Challenger MT665CDifference
ManufacturerAllis ChalmersChallenger—
Model8550MT665C—
CategoryUtilityAgricultural—

Engine

SpecAllis Chalmers 8550Challenger MT665CDifference
ManufacturerAllis ChalmersSisu Diesel—
Model6120T84CTA—
Power Output300hp290hp▲ 8550+10 hp · +3%
Rated RPM2,500RPM2,200RPM▲ 8550+300 RPM · +14%
Cylinders66Same
Displacement731ci513ci▲ 8550+218 ci · +42%
Bore5.3in4.4in▲ 8550+0.9 in · +20%
Stroke6.3in5.7in▲ 8550+0.6 in · +11%

Transmission

SpecAllis Chalmers 8550Challenger MT665CDifference
TypePartial Power ShiftContinuously variable transmission (Techstar CVT)—

Dimensions & Weight

SpecAllis Chalmers 8550Challenger MT665CDifference
Length285in223in▲ 8550+62 in · +28%
Width95.5inNot recorded—
Height139in133in▲ 8550+6 in · +5%
Operating Weight27,040lb25,795lb▲ 8550+1,245 lb · +5%

Hydraulics

SpecAllis Chalmers 8550Challenger MT665CDifference
System TypeClosed CenterClosed Center Load Sensing—
Steering TypeHydrostatic PowerNot recorded—

Power Take-off (PTO)

SpecAllis Chalmers 8550Challenger MT665CDifference
TypeIndependentNot recorded—
Speed 11,000rpmNot recorded—

Hitch & Towing

SpecAllis Chalmers 8550Challenger MT665CDifference
Hitch TypeThree-Point HitchThree-Point HitchSame
Hitch CategoryIV/IIIIII—
Hitch PositionNot recordedRear—
Hitch CapacityNot recorded26,460lb—

Chassis & Drive

SpecAllis Chalmers 8550Challenger MT665CDifference
Chassis Type4x4 Articulated 4WDNot recorded—
Drive Type4WDNot recorded—
Steering TypeHydrostatic PowerNot recorded—
Brake TypeHydraulic Wet DiscsNot recorded—

Electrical

SpecAllis Chalmers 8550Challenger MT665CDifference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers 8550Challenger MT665CDifference
Coolant18galNot recorded—

Operator Station

SpecAllis Chalmers 8550Challenger MT665CDifference
TypeAcousta Cab II with heat and air-conditioningNot recorded—

Category context

Both models against the field

Engine Power

median 55 hp
A · 97th percentile (300 hp)B · 96th percentile (290 hp)

Engine Displacement

median 183 ci
A · 96th percentile (731 ci)B · 94th percentile (513 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 · 96th percentile (25,795 lb)

Length

median 137 in
A · 99th percentile (285 in)B · 95th percentile (223 in)
A · 8550B · MT665CMedian Utility Tractor
Full spec pageAllis Chalmers 8550Full spec pageChallenger MT665C