Production years
1963-1967
Farmall tractor ยท 1963-1967
Farmall 806 Tractor
The Farmall 806 was a 1963-1967 row-crop tractor rated at 94.5 PTO hp and built for substantial field work. It was the row-crop counterpart to the International Harvester 806 standard-tread model.
Engine
International Harvester six-cylinder: 5.9 L diesel, or 4.9 L petrol or LP gas
Power
94.5 PTO hp claimed; 94.93 PTO hp tested
Weight approx.
3,500-3,855 kg
Farmall 806 specifications
| Production years | 1963-1967 |
|---|---|
| Engine | International Harvester six-cylinder: 5.9 L diesel, or 4.9 L petrol or LP gas |
| Power | 94.5 PTO hp claimed; 94.93 PTO hp tested |
| Transmission | 8-speed unsynchronized gear, with optional 16-speed Torque Amplifier two-speed power shift |
| Weight approx. | 3,500-3,855 kg |
| Fuel type | Diesel, petrol, or LP gas |
| PTO | Independent PTO, typically 540/1,000 rpm depending on equipment |
| Hydraulics | Open-center system; optional 12 gpm pump |
What the 806 is used for
The 806 is well matched to tillage, planting, haying, heavy PTO equipment, and other medium-to-large farm work. Its power and weight make it a genuine field tractor rather than a light utility machine.
It can also serve well at shows and on collector farms, although its size requires appropriate storage, transport, and implements. The diesel is a common working choice, while petrol and LP versions have their own collector appeal.
Why the Farmall 806 stands out
With nearly 43,000 Farmall row-crop units built, the 806 became a highly familiar International Harvester tractor. It combined strong six-cylinder power with independent PTO, power steering, the optional Torque Amplifier, and the Farmall row-crop layout that many operators wanted.
Buying a used Farmall 806
Test the Torque Amplifier carefully through both ranges under load, as repair can be significant. Also inspect hydraulic performance, PTO engagement, dry-disc brake operation, steering, rear tyres, engine starting and blow-by, and evidence of worn hitch or Fast Hitch parts. Values vary, so check listings and confirm option-specific specifications with TractorData.com.
Farmall 806 frequently asked questions
What is the difference between a Farmall 806 and an IH 806?
The Farmall 806 is the row-crop version; the International Harvester 806 is the standard-tread version.
How much PTO power does a Farmall 806 have?
It was rated at 94.5 PTO hp and tested at 94.93 PTO hp.
What does Torque Amplifier add to an 806?
It provides a two-speed power shift, giving the tractor a 16-speed arrangement rather than the basic 8-speed transmission.
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. Used tractor values vary by condition and region. Page updated 19 Sep 2026.