International Harvester 1466 Tractor

The International Harvester 1466 is a 1971-1976 high-horsepower row-crop tractor powered by a turbocharged 436-cubic-inch diesel six. Its claimed PTO rating is 133 hp, making it suitable for serious tillage and large PTO-driven work of its period.

International Harvester 1466 specifications

What the 1466 is used for

The 1466 is suited to heavy drawbar work, large tillage tools, forage equipment, and 1,000-rpm PTO implements within its rated capacity. Two-wheel-drive and optional four-wheel-drive versions differ materially in traction and front-axle configuration.

It remains a popular classic field tractor, but it is a large machine that benefits from appropriate ballast, tire setup, and a careful match between implement and available traction.

Why the International Harvester 1466 stands out

The 1466 combines a turbocharged DT-436 diesel, independent 1,000-rpm PTO, bull-gear final drives, and an available Torque Amplifier transmission. TractorData lists 25,264 built in Rock Island, Illinois, which helps explain its enduring visibility in the classic IH market.

Buying a used International Harvester 1466

Test the Torque Amplifier through its full range under load, and inspect clutch operation, hydraulic performance, brakes, steering, and the condition of the turbocharged engine. Verify whether the tractor is two-wheel drive or optional four-wheel drive, inspect cab condition if equipped, and match the serial number on the left clutch housing to the claimed year.

International Harvester 1466 frequently asked questions

How much PTO power does an International Harvester 1466 have?

TractorData lists 133 claimed PTO horsepower.

What engine is in a 1466?

It uses an International Harvester DT-436 turbocharged 7.1 L six-cylinder diesel.

Was the 1466 available with four-wheel drive?

Yes. TractorData lists two-wheel-drive and optional four-wheel-drive versions.

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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