International Harvester 766
The International Harvester 766 is a row crop tractor built from 1971 to 1976. It's a 2-wheel drive machine with a 4x2 chassis and hydrostatic power steering. This tractor has a sliding gear transmission with partial power shift, offering 16 forward gears and 8 reverse gears for versatile operation. Under the hood, the 766 features a 6-cylinder, inline gasoline engine made by International Harvester. The C291 engine is naturally aspirated and liquid-cooled, with an average displacement of 391 cubic inches. It runs at a very high rated speed of 2400 rpm. The tractor weighs 10,300 pounds and measures 165 inches long, 98 inches wide, and 105 inches tall. It comes with agricultural tires on both front and rear. The 766 is equipped with a three-point hitch at the rear, falling into category II. It has an independent PTO with two speed options: 540 rpm and 1000 rpm. The hydraulic system is open center type, and the tractor features an open operator station. For safety and control, it has hydraulic dry disc brakes and an electric starter. This versatile row crop tractor is designed to handle various farming tasks efficiently.
Quick specs
- Category
- Row Crop
- Operating Weight
- 10,300 lb
- Transmission
- Sliding gear / Partial power shift
Overview
About the International Harvester 766
The International Harvester 766 is a row crop tractor built from 1971 to 1976. It's a 2-wheel drive machine with a 4x2 chassis and hydrostatic power steering. This tractor has a sliding gear transmission with partial power shift, offering 16 forward gears and 8 reverse gears for versatile operation. Under the hood, the 766 features a 6-cylinder, inline gasoline engine made by International Harvester. The C291 engine is naturally aspirated and liquid-cooled, with an average displacement of 391 cubic inches. It runs at a very high rated speed of 2400 rpm. The tractor weighs 10,300 pounds and measures 165 inches long, 98 inches wide, and 105 inches tall. It comes with agricultural tires on both front and rear. The 766 is equipped with a three-point hitch at the rear, falling into category II. It has an independent PTO with two speed options: 540 rpm and 1000 rpm. The hydraulic system is open center type, and the tractor features an open operator station. For safety and control, it has hydraulic dry disc brakes and an electric starter. This versatile row crop tractor is designed to handle various farming tasks efficiently.
Full specifications
Every recorded spec
General
| Manufacturer | International Harvester |
|---|---|
| Model | 766 |
| Category | Row Crop tractor |
| Type | 4x2 2WD |
| Years built | 1971–1976 |
| Operating weight | 10,300lb |
Engine
| Make | International Harvester |
|---|---|
| Model | C291 |
| Cylinders | 6 |
| Displacement | 391ci |
| Bore | 3.74in |
| Stroke | 4.41in |
Transmission
| Type | Sliding gear / Partial power shift |
|---|---|
| Forward gears | 16 |
| Reverse gears | 8 |
Chassis & drive
| Chassis | 4x2 2WD |
|---|---|
| Drive | 2WD |
| Steering | Hydrostatic Power |
| Brakes | Hydraulic Dry Disc |
| Cab | Open |
Hydraulics
| Type | Open center |
|---|
Power take-off
| Rear PTO | Independent |
|---|---|
| PTO speed | 540rpm |
Dimensions
| Length | 165in |
|---|---|
| Width | 98in |
| Height | 105in |
| Operating weight | 10,300lb |
Head to head
766 vs. Row Crop median
How the International Harvester 766 compares to other Row Crop tractors
| Spec | This model | Row Crop median | Difference | Percentile |
|---|---|---|---|---|
| Engine Displacement | 391 ci | 391 ci | at median | 50th |
| Cylinders | 6 | 6 | at median | 50th |
| Forward Gears | 16 | 16 | at median | 50th |
| Operating Weight | 10,300 lb | 12,307 lb | -16% | 34th |
| Length | 165 in | 180 in | -8% | 30th |
| Width | 98 in | 91.2 in | +8% | 77th |
| Height | 105 in | 114 in | -7% | 26th |
Medians and percentiles are computed from the row crop tractors in our database with a recorded value for each spec (sample sizes 806–1,417 models).
Compare to tractors with similar specs
Commonly compared International Harvester tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| International Harvester 1046 | 108.5 hp | 8,929 lb | — | Compare → |
| International Harvester 1055 | 100 hp | 9,635 lb | — | Compare → |
| International Harvester 1066 | 108 hp | 12,148 lb | 1971–1976 | Compare → |
| International Harvester 1086 | 130 hp | 12,715 lb | 1976–1981 | Compare → |
| International Harvester 1206 | 110 hp | 10,115 lb | 1965–1967 | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Advance-Rumely 6A | — | 6,370 lb | — | Compare → |
| Advance-Rumely DoAll | — | 3,702 lb | — | Compare → |
| Advance-Rumely OilPull B 25/45 | — | 25,000 lb | — | Compare → |
| Advance-Rumely OilPull E 30/60 | — | 26,300 lb | — | Compare → |
| Advance-Rumely OilPull F 15/30 | — | 16,500 lb | — | Compare → |
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FAQ
Common questions
What years was the International Harvester 766 manufactured?
Production of the International Harvester 766 ran from 1971 through 1976.
What type of transmission does the International Harvester 766 have?
The International Harvester 766 uses a Sliding gear / Partial power shift transmission offering 16 forward gears.
What type of hydraulic system does the International Harvester 766 use?
Hydraulics on the International Harvester 766 are Open center.
What hitch category is the International Harvester 766?
The International Harvester 766 uses a Category II hitch.
How many cylinders does the International Harvester 766 have?
The International Harvester 766 runs a 6-cylinder engine with a displacement of 391 ci.
What is the working weight of the International Harvester 766?
The operating weight of the International Harvester 766 is approximately 10,300 lb.
What routine service does the International Harvester 766 need?
Regular maintenance for the International Harvester 766 includes checking and changing engine oil, hydraulic fluid, and filters, plus routine inspections as recommended in the owner's manual. Always follow the manufacturer's maintenance schedule for specific intervals and procedures.
