Head to head · Utility

Allis Chalmers 8550 vs Challenger MT765

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 MT765

Agricultural

power
299 hp
displacement
537 ci
Cylinders
6
Forward gears
16
Full MT765 specs
Allis ChalmersAllis Chalmers 8550
vs
ChallengerChallenger MT765

How they compare

Headline specs vs. the whole Utility

n = 4,941–5,720

Engine Power

▲ 8550 higher · +1 hp (<1%)
8550300 hp
MT765299 hp
Median Utility Tractor55 hp

8550 is in the 97th percentile; MT765 is in the 96th · 5,383 models

Engine Displacement

▲ 8550 higher · +194 ci (+36%)
8550731 ci
MT765537 ci
Median Utility Tractor183 ci

8550 is in the 96th percentile; MT765 is in the 94th · 5,580 models

Cylinders

= Effectively tied
85506
MT7656
Median Utility Tractor4

8550 is in the 93rd percentile; MT765 is in the 93rd · 5,720 models

Forward Gears

▲ 8550 higher · +4 (+25%)
855020
MT76516
Median Utility Tractor12

8550 is in the 86th percentile; MT765 is in the 73rd · 4,941 models

8550 (A)MT765 (B)Median Utility Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers 8550Challenger MT765Difference
ManufacturerAllis ChalmersChallenger—
Model8550MT765—
CategoryUtilityAgricultural—

Engine

SpecAllis Chalmers 8550Challenger MT765Difference
ManufacturerAllis ChalmersCaterpillar—
Model6120TNot recorded—
Power Output300hp299hp▲ 8550+1 hp · <1%
Rated RPM2,500RPM2,100RPM▲ 8550+400 RPM · +19%
Cylinders66Same
Displacement731ci537ci▲ 8550+194 ci · +36%
Bore5.3in4.4in▲ 8550+0.9 in · +20%
Stroke6.3in5.9in▲ 8550+0.4 in · +7%

Transmission

SpecAllis Chalmers 8550Challenger MT765Difference
TypePartial Power ShiftSelective gear fixed ratio with full range operator-controlled power shift—

Dimensions & Weight

SpecAllis Chalmers 8550Challenger MT765Difference
Length285inNot recorded—
Width95.5inNot recorded—
Height139inNot recorded—
Operating Weight27,040lb29,345lb▲ MT765+2,305 lb · +9%

Hydraulics

SpecAllis Chalmers 8550Challenger MT765Difference
System TypeClosed CenterNot recorded—
Steering TypeHydrostatic PowerElectro-hydraulic differential steering controlled by steering wheel—

Power Take-off (PTO)

SpecAllis Chalmers 8550Challenger MT765Difference
TypeIndependentNot recorded—
Speed 11,000rpmNot recorded—

Hitch & Towing

SpecAllis Chalmers 8550Challenger MT765Difference
Hitch TypeThree-Point HitchNot recorded—
Hitch CategoryIV/IIIIII—
Hitch PositionNot recordedRear—

Chassis & Drive

SpecAllis Chalmers 8550Challenger MT765Difference
Chassis Type4x4 Articulated 4WDNot recorded—
Drive Type4WDNot recorded—
Steering TypeHydrostatic PowerElectro-hydraulic differential steering controlled by steering wheel—
Brake TypeHydraulic Wet DiscsWet multiple disc, hydraulically actuated by foot pedal—

Electrical

SpecAllis Chalmers 8550Challenger MT765Difference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers 8550Challenger MT765Difference
Coolant18galNot recorded—

Operator Station

SpecAllis Chalmers 8550Challenger MT765Difference
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 (299 hp)

Engine Displacement

median 183 ci
A · 96th percentile (731 ci)B · 94th percentile (537 ci)

Cylinders

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

Forward Gears

median 12
A · 86th percentile (20)B · 73rd percentile (16)

Operating Weight

median 5,303 lb
A · 96th percentile (27,040 lb)B · 97th percentile (29,345 lb)
A · 8550B · MT765Median Utility Tractor
Full spec pageAllis Chalmers 8550Full spec pageChallenger MT765