Head to head · Standard Tread

International Harvester 660 vs International Harvester 806

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International HarvesterModel A

International Harvester 660

Standard Tread

power
95 hp
displacement
282 ci
Cylinders
6
Forward gears
10
Full 660 specs
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International HarvesterModel B

International Harvester 806

Utility

power
95 hp
displacement
361 ci
Cylinders
6
Forward gears
8
Full 806 specs
International HarvesterInternational Harvester 660
vs
International HarvesterInternational Harvester 806

How they compare

Headline specs vs. the whole Standard Tread

n = 121–367

Engine Power

= Effectively tied
66095 hp
80695 hp
Median Standard Tread Tractor45 hp

660 is in the 90th percentile; 806 is in the 90th · 121 models

Engine Displacement

▲ 806 higher · +79 ci (+28%)
660282 ci
806361 ci
Median Standard Tread Tractor382 ci

660 is in the 29th percentile; 806 is in the 48th · 353 models

Cylinders

= Effectively tied
6606
8066
Median Standard Tread Tractor4

660 is in the 93rd percentile; 806 is in the 93rd · 367 models

Forward Gears

▲ 660 higher · +2 (+25%)
66010
8068
Median Standard Tread Tractor4

660 is in the 96th percentile; 806 is in the 88th · 341 models

660 (A)806 (B)Median Standard Tread Tractor

Full comparison

Every spec, side by side

General Information

SpecInternational Harvester 660International Harvester 806Difference
ManufacturerInternational HarvesterInternational HarvesterSame
Model660806—
CategoryStandard TreadUtility, Standard Tread—

Engine

SpecInternational Harvester 660International Harvester 806Difference
ManufacturerInternational HarvesterInternational HarvesterSame
ModelInternational Harvester 4.3L 6-cyl gasolineD-361—
Power Output95hp95hpSame
Rated RPM2,400RPM2,400RPMSame
Cylinders66Same
Displacement282ci361ci▲ 806+79 ci · +28%
Bore3.7in4.1in▲ 806+0.4 in · +11%
Stroke4.4in4.5in▲ 806+0.1 in · +2%

Transmission

SpecInternational Harvester 660International Harvester 806Difference
TypeSliding gear / Torque AmplifierUnsynchronized gear—

Dimensions & Weight

SpecInternational Harvester 660International Harvester 806Difference
Length143in153in▲ 806+10 in · +7%
Width78in106in▲ 806+28 in · +36%
Height74in81.9in▲ 806+7.9 in · +11%
Operating Weight9,635lb8,460lb▲ 660+1,175 lb · +14%

Hydraulics

SpecInternational Harvester 660International Harvester 806Difference
System TypeNot recordedOpen center—
Steering TypeManualHydrostatic power—

Power Take-off (PTO)

SpecInternational Harvester 660International Harvester 806Difference
TypeNot recordedIndependent—
Speed 1540rpm540rpmSame
Speed 2Not recorded1,000rpm—

Hitch & Towing

SpecInternational Harvester 660International Harvester 806Difference
Hitch TypeNot recordedIH Fast Hitch—
Hitch CategoryNot recordedCategory 2—
Hitch PositionNot recordedRear—

Chassis & Drive

SpecInternational Harvester 660International Harvester 806Difference
Chassis TypeNot recorded4x2 2WD—
Steering TypeManualHydrostatic power—
Brake TypeNot recordedHydraulic dry disc—

Electrical

SpecInternational Harvester 660International Harvester 806Difference
Starter TypeNot recordedElectric—

Capacities

SpecInternational Harvester 660International Harvester 806Difference
Coolant5.8gal6gal▲ 806+0.2 gal · +3%

Operator Station

SpecInternational Harvester 660International Harvester 806Difference
TypeNot recordedOpen operator station—

Category context

Both models against the field

Engine Power

median 45 hp
A · 90th percentile (95 hp)B · 90th percentile (95 hp)

Engine Displacement

median 382 ci
A · 29th percentile (282 ci)B · 48th percentile (361 ci)

Cylinders

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

Forward Gears

median 4
A · 96th percentile (10)B · 88th percentile (8)

Operating Weight

median 6,834 lb
A · 77th percentile (9,635 lb)B · 67th percentile (8,460 lb)
A · 660B · 806Median Standard Tread Tractor
Full spec pageInternational Harvester 660Full spec pageInternational Harvester 806