Head to head · Utility

International Harvester 1256 vs International Harvester 666

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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
Image not recorded
International HarvesterModel B

International Harvester 666

Utility

power
Not recorded
displacement
312 ci
Cylinders
6
Forward gears
5
Full 666 specs
International HarvesterInternational Harvester 1256
vs
International HarvesterInternational Harvester 666

How they compare

Headline specs vs. the whole Utility

n = 4,941–5,720

Engine Displacement

▲ 1256 higher · +95 ci (+30%)
1256407 ci
666312 ci
Median Utility Tractor183 ci

1256 is in the 90th percentile; 666 is in the 85th · 5,580 models

Cylinders

= Effectively tied
12566
6666
Median Utility Tractor4

1256 is in the 93rd percentile; 666 is in the 93rd · 5,720 models

Forward Gears

▲ 1256 higher · +11 (+220%)
125616
6665
Median Utility Tractor12

1256 is in the 73rd percentile; 666 is in the 6th · 4,941 models

Operating Weight

▲ 1256 higher · +3,352 lb (+48%)
125610,405 lb
6667,053 lb
Median Utility Tractor5,303 lb

1256 is in the 87th percentile; 666 is in the 67th · 5,107 models

1256 (A)666 (B)Median Utility Tractor

Full comparison

Every spec, side by side

General Information

SpecInternational Harvester 1256International Harvester 666Difference
ManufacturerInternational HarvesterInternational HarvesterSame
Model1256666—
CategoryUtility, Standard TreadUtility—

Engine

SpecInternational Harvester 1256International Harvester 666Difference
ManufacturerInternational HarvesterInternational HarvesterSame
ModelDT407D312—
Power Output113hpNot recorded—
Rated RPM2,400RPM2,000RPM▲ 1256+400 RPM · +20%
Cylinders66Same
Displacement407ci312ci▲ 1256+95 ci · +30%
Bore4.3in3.9in▲ 1256+0.4 in · +10%
Stroke4.6in4.4in▲ 1256+0.2 in · +5%

Transmission

SpecInternational Harvester 1256International Harvester 666Difference
TypeGear, Partial Power ShiftSliding gear—

Dimensions & Weight

SpecInternational Harvester 1256International Harvester 666Difference
Length164inNot recorded—
Width91.7inNot recorded—
Height85.8inNot recorded—
Operating Weight10,405lb7,053lb▲ 1256+3,352 lb · +48%

Hydraulics

SpecInternational Harvester 1256International Harvester 666Difference
System TypeOpen CenterNot recorded—
Steering TypePowerHydrostatic power—

Power Take-off (PTO)

SpecInternational Harvester 1256International Harvester 666Difference
TypeIndependentIndependent Rear PTO—
Speed 11,000rpm540rpm▲ 1256+460 rpm · +85%

Hitch & Towing

SpecInternational Harvester 1256International Harvester 666Difference
Hitch TypeThree-Point HitchIH Fast Hitch—
Hitch CategoryIII/IIII—
Hitch PositionRearRearSame

Chassis & Drive

SpecInternational Harvester 1256International Harvester 666Difference
Chassis Type4x2 2WD4x2 2WDSame
Drive Type2WD2WDSame
Steering TypePowerHydrostatic power—
Brake TypeIndependent hydraulic dry discDry disc—

Electrical

SpecInternational Harvester 1256International Harvester 666Difference
Starter TypeElectricElectricSame

Capacities

SpecInternational Harvester 1256International Harvester 666Difference
Coolant6galNot recorded—

Operator Station

SpecInternational Harvester 1256International Harvester 666Difference
TypeOpen, ROPS, Cab (optional)Open or Two-post ROPS (optional)—

Category context

Both models against the field

Engine Displacement

median 183 ci
A · 90th percentile (407 ci)B · 85th percentile (312 ci)

Cylinders

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

Forward Gears

median 12
A · 73rd percentile (16)B · 6th percentile (5)

Operating Weight

median 5,303 lb
A · 87th percentile (10,405 lb)B · 67th percentile (7,053 lb)
A · 1256B · 666Median Utility Tractor
Full spec pageInternational Harvester 1256Full spec pageInternational Harvester 666