International Harvester 660
The International Harvester 660 is a powerful tractor built for serious farm work. It has a strong 6-cylinder gasoline engine that puts out 95 horsepower. This engine is big, with a displacement of 282 cubic inches, giving the tractor plenty of muscle for tough jobs. The 660 offers flexibility with its 10 forward gears and 2 reverse gears. It has a sliding gear transmission with a Torque Amplifier, which helps when extra power is needed. The tractor is quite large, measuring 142.6 inches long, 78 inches wide, and 74 inches tall. It's also heavy, weighing 9,635 pounds, which helps it grip the ground well. The 660 has a PTO that spins at 540 rpm, making it suitable for running various farm implements.
Quick specs
- Category
- Standard Tread
- Engine Power Output
- 95hp
- Operating Weight
- 9,635 lb
- Transmission
- Sliding gear / Torque Amplifier
At a glance
How the 660 compares
vs. Standard Tread medianDistribution
Engine Power (hp)
Across all Standard Tread tractors
This model
The 660 ranks at the 90th percentile for engine power among recorded standard tread tractors.
Overview
About the International Harvester 660
The International Harvester 660 is a powerful tractor built for serious farm work. It has a strong 6-cylinder gasoline engine that puts out 95 horsepower. This engine is big, with a displacement of 282 cubic inches, giving the tractor plenty of muscle for tough jobs. The 660 offers flexibility with its 10 forward gears and 2 reverse gears. It has a sliding gear transmission with a Torque Amplifier, which helps when extra power is needed. The tractor is quite large, measuring 142.6 inches long, 78 inches wide, and 74 inches tall. It's also heavy, weighing 9,635 pounds, which helps it grip the ground well. The 660 has a PTO that spins at 540 rpm, making it suitable for running various farm implements.
Full specifications
Every recorded spec
General
| Manufacturer | International Harvester |
|---|---|
| Model | 660 |
| Category | Standard Tread tractor |
| Operating weight | 9,635lb |
Engine
| Make | International Harvester |
|---|---|
| Model | International Harvester 4.3L 6-cyl gasoline |
| Power | 95hp |
| Cylinders | 6 |
| Displacement | 282ci |
| Bore | 3.69in |
| Stroke | 4.39in |
Transmission
| Type | Sliding gear / Torque Amplifier |
|---|---|
| Forward gears | 10 |
| Reverse gears | 2 |
Chassis & drive
| Steering | Manual |
|---|
Power take-off
| PTO speed | 540rpm |
|---|
Dimensions
| Length | 142.6in |
|---|---|
| Width | 78in |
| Height | 74in |
| Operating weight | 9,635lb |
Capacities
| Cooling system | 5.75gal |
|---|
Head to head
660 vs. Standard Tread median
How the International Harvester 660 compares to other Standard Tread tractors
| Spec | This model | Standard Tread median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 95 hp | 45 hp | +111% | 90th |
| Engine Displacement | 282 ci | 382 ci | -26% | 29th |
| Cylinders | 6 | 4 | +50% | 93rd |
| Forward Gears | 10 | 4 | +150% | 96th |
| Operating Weight | 9,635 lb | 6,834 lb | +41% | 77th |
| Length | 143 in | 137 in | +4% | 60th |
| Width | 78 in | 72.4 in | +8% | 64th |
| Height | 74 in | 72.3 in | +2% | 53rd |
Medians and percentiles are computed from the standard tread tractors in our database with a recorded value for each spec (sample sizes 121–367 models).
Compare to tractors with similar specs
Commonly compared International Harvester tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| International Harvester 806 | 95 hp | 8,460 lb | 1963–1967 | Compare → |
| International Harvester 1256 | 113 hp | 10,405 lb | 1967–1969 | Compare → |
| International Harvester 560 | 72.5 hp | 6,563 lb | 1958–1963 | Compare → |
| International Harvester B-614 | 62.5 hp | — | — | Compare → |
| International Harvester TD-8 82 Series | 62.5 hp | 11,500 lb | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Antonio Carraro SRX 10400 | 95 hp | 4,718 lb | — | Compare → |
| Antonio Carraro TGF 10400 | 95 hp | 5,247 lb | — | Compare → |
| Antonio Carraro TRG 10400 | 95 hp | 5,247 lb | — | Compare → |
| Antonio Carraro TRX 10400 | 95 hp | 4,828 lb | — | Compare → |
| Antonio Carraro TTR 10400 | 95 hp | 4,806 lb | — | Compare → |
Explore
International Harvester siblings
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FAQ
Common questions
What is the engine power output of the International Harvester 660?
Rated engine output for the International Harvester 660 is 95 hp, delivered by a 6-cylinder engine. The engine displaces 282 ci.
What is the operating weight of the International Harvester 660?
In working trim, the International Harvester 660 comes in at roughly 9,635 lb.
Which transmission does the International Harvester 660 use?
The International Harvester 660 is equipped with a Sliding gear / Torque Amplifier transmission with 10 forward gears.
How do I maintain a International Harvester 660?
Routine service for the International Harvester 660 covers engine oil and filter changes, hydraulic and coolant level checks, air filter cleaning, and scheduled inspections. Refer to the manufacturer's maintenance schedule for exact intervals.

