International Harvester 1256 Tractor

The International Harvester 1256 is a 1960s high-horsepower row-crop or standard-tread tractor with a turbocharged 6.7 L diesel and about 113 PTO horsepower. It is a popular predecessor to the 1456, valued for serious field capability and classic IH character.

International Harvester 1256 specifications

What the 1256 is used for

The 1256 was designed for demanding row-crop and general farm work, such as plowing, disking, planting, and powering large PTO implements. Its torque and weight put it in the upper-power class of its era.

Modern owners use them for hay and tillage work, shows, and collector events. A well-maintained example remains useful where an older, straightforward tractor is appropriate.

Why the International Harvester 1256 stands out

The 1256 was among IH's early turbocharged high-horsepower tractors and has an enduring following. It offers the durable 56 Series layout, a powerful DT-407 diesel, and broad owner knowledge, while Farmall row-crop and IH standard versions provide collector variety.

Buying a used International Harvester 1256

Operate the Torque Amplifier through both ranges under a real load and check for slipping, delayed engagement, or transmission noise. Inspect the DT-407 for hard starting, excess blow-by, cooling issues, and neglected turbocharger service, then test hydraulics, steering, brakes, PTO, and clutch. Confirm the serial number and exact configuration through TractorData.com or serial-number records.

International Harvester 1256 frequently asked questions

How much PTO horsepower does an IH 1256 have?

The claimed rating is 113 PTO horsepower, while Nebraska testing recorded about 116.1 PTO horsepower.

What years was the IH 1256 made?

It was produced from 1967 through 1969.

Are parts available for the IH 1256?

Many maintenance and wear parts remain available through IH-focused aftermarket suppliers and salvage networks, though condition and availability vary by component.

Specifications are commonly cited figures for general reference; exact figures vary by year and serial number, so confirm against TractorData.com and the machine's records. Values and prices of used tractors vary by condition and region. Page updated Aug 4, 2026.

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