Head to head · Standard Tread

International Harvester 1256 vs International Harvester 660

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International HarvesterModel A

International Harvester 1256

Utility

power
113 hp
displacement
407 ci
Cylinders
6
Forward gears
16
Full 1256 specs
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International HarvesterModel B

International Harvester 660

Standard Tread

power
95 hp
displacement
282 ci
Cylinders
6
Forward gears
10
Full 660 specs
International HarvesterInternational Harvester 1256
vs
International HarvesterInternational Harvester 660

How they compare

Headline specs vs. the whole Standard Tread

n = 121–367

Engine Power

▲ 1256 higher · +18 hp (+19%)
1256113 hp
66095 hp
Median Standard Tread Tractor45 hp

1256 is in the 95th percentile; 660 is in the 90th · 121 models

Engine Displacement

▲ 1256 higher · +125 ci (+44%)
1256407 ci
660282 ci
Median Standard Tread Tractor382 ci

1256 is in the 54th percentile; 660 is in the 29th · 353 models

Cylinders

= Effectively tied
12566
6606
Median Standard Tread Tractor4

1256 is in the 93rd percentile; 660 is in the 93rd · 367 models

Forward Gears

▲ 1256 higher · +6 (+60%)
125616
66010
Median Standard Tread Tractor4

1256 is in the 99th percentile; 660 is in the 96th · 341 models

1256 (A)660 (B)Median Standard Tread Tractor

Full comparison

Every spec, side by side

General Information

SpecInternational Harvester 1256International Harvester 660Difference
ManufacturerInternational HarvesterInternational HarvesterSame
Model1256660—
CategoryUtility, Standard TreadStandard Tread—

Engine

SpecInternational Harvester 1256International Harvester 660Difference
ManufacturerInternational HarvesterInternational HarvesterSame
ModelDT407International Harvester 4.3L 6-cyl gasoline—
Power Output113hp95hp▲ 1256+18 hp · +19%
Rated RPM2,400RPM2,400RPMSame
Cylinders66Same
Displacement407ci282ci▲ 1256+125 ci · +44%
Bore4.3in3.7in▲ 1256+0.6 in · +16%
Stroke4.6in4.4in▲ 1256+0.2 in · +5%

Transmission

SpecInternational Harvester 1256International Harvester 660Difference
TypeGear, Partial Power ShiftSliding gear / Torque Amplifier—

Dimensions & Weight

SpecInternational Harvester 1256International Harvester 660Difference
Length164in143in▲ 1256+21 in · +15%
Width91.7in78in▲ 1256+13.7 in · +18%
Height85.8in74in▲ 1256+11.8 in · +16%
Operating Weight10,405lb9,635lb▲ 1256+770 lb · +8%

Hydraulics

SpecInternational Harvester 1256International Harvester 660Difference
System TypeOpen CenterNot recorded—
Steering TypePowerManual—

Power Take-off (PTO)

SpecInternational Harvester 1256International Harvester 660Difference
TypeIndependentNot recorded—
Speed 11,000rpm540rpm▲ 1256+460 rpm · +85%

Hitch & Towing

SpecInternational Harvester 1256International Harvester 660Difference
Hitch TypeThree-Point HitchNot recorded—
Hitch CategoryIII/IINot recorded—
Hitch PositionRearNot recorded—

Chassis & Drive

SpecInternational Harvester 1256International Harvester 660Difference
Chassis Type4x2 2WDNot recorded—
Drive Type2WDNot recorded—
Steering TypePowerManual—
Brake TypeIndependent hydraulic dry discNot recorded—

Electrical

SpecInternational Harvester 1256International Harvester 660Difference
Starter TypeElectricNot recorded—

Capacities

SpecInternational Harvester 1256International Harvester 660Difference
Coolant6gal5.8gal▲ 1256+0.2 gal · +3%

Operator Station

SpecInternational Harvester 1256International Harvester 660Difference
TypeOpen, ROPS, Cab (optional)Not recorded—

Category context

Both models against the field

Engine Power

median 45 hp
A · 95th percentile (113 hp)B · 90th percentile (95 hp)

Engine Displacement

median 382 ci
A · 54th percentile (407 ci)B · 29th percentile (282 ci)

Cylinders

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

Forward Gears

median 4
A · 99th percentile (16)B · 96th percentile (10)

Operating Weight

median 6,834 lb
A · 80th percentile (10,405 lb)B · 77th percentile (9,635 lb)
A · 1256B · 660Median Standard Tread Tractor
Full spec pageInternational Harvester 1256Full spec pageInternational Harvester 660