International Harvester 634
The International Harvester 634 is a powerful utility tractor built for tough farm work. It has a strong 4-wheel drive system and power steering, making it easy to handle in various conditions. The tractor uses a manual transmission with 8 forward gears and 2 reverse gears, giving the driver good control over speed and power. Under the hood, the 634 has a diesel engine made by International Harvester. This engine has 4 cylinders and is naturally aspirated, meaning it doesn't use a turbocharger. With 66 horsepower, it offers above-average power for its class. The engine size is also above average, which helps it handle heavy loads. The tractor has a three-point hitch at the back, useful for attaching various farm tools. It's a big machine, weighing 7,694 pounds, which is on the heavier side for utility tractors. This weight helps it stay stable during tough jobs.
Quick specs
- Category
- Utility
- Engine Power Output
- 66hp
- Operating Weight
- 7,694 lb
- Transmission
- Manual
At a glance
How the 634 compares
vs. Utility medianDistribution
Engine Power (hp)
Across all Utility tractors
This model
The 634 ranks at the 60th percentile for engine power among recorded utility tractors.
Overview
About the International Harvester 634
The International Harvester 634 is a powerful utility tractor built for tough farm work. It has a strong 4-wheel drive system and power steering, making it easy to handle in various conditions. The tractor uses a manual transmission with 8 forward gears and 2 reverse gears, giving the driver good control over speed and power. Under the hood, the 634 has a diesel engine made by International Harvester. This engine has 4 cylinders and is naturally aspirated, meaning it doesn't use a turbocharger. With 66 horsepower, it offers above-average power for its class. The engine size is also above average, which helps it handle heavy loads. The tractor has a three-point hitch at the back, useful for attaching various farm tools. It's a big machine, weighing 7,694 pounds, which is on the heavier side for utility tractors. This weight helps it stay stable during tough jobs.
Full specifications
Every recorded spec
General
| Manufacturer | International Harvester |
|---|---|
| Model | 634 |
| Category | Utility tractor |
| Type | 4WD |
| Operating weight | 7,694lb |
Engine
| Make | International Harvester |
|---|---|
| Model | BD-281 |
| Power | 66hp |
| Cylinders | 4 |
| Displacement | 281ci |
| Bore | 4.13in |
| Stroke | 5.25in |
Transmission
| Type | Manual |
|---|---|
| Forward gears | 8 |
| Reverse gears | 2 |
Chassis & drive
| Drive | 4WD |
|---|---|
| Steering | Power |
Dimensions
| Length | 139in |
|---|---|
| Width | 65.5in |
| Height | 96in |
| Operating weight | 7,694lb |
Head to head
634 vs. Utility median
How the International Harvester 634 compares to other Utility tractors
| Spec | This model | Utility median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 66 hp | 55 hp | +20% | 60th |
| Engine Displacement | 281 ci | 183 ci | +53% | 82nd |
| Cylinders | 4 | 4 | at median | 50th |
| Forward Gears | 8 | 12 | -33% | 23rd |
| Operating Weight | 7,694 lb | 5,303 lb | +45% | 73rd |
| Length | 139 in | 137 in | +2% | 53rd |
| Width | 65.5 in | 66 in | -1% | 49th |
| Height | 96 in | 94.1 in | +2% | 55th |
Medians and percentiles are computed from the utility tractors in our database with a recorded value for each spec (sample sizes 3,933–5,720 models).
Compare to tractors with similar specs
Commonly compared International Harvester tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| International Harvester 574 | 67 hp | 4,835 lb | 1970–1978 | Compare → |
| International Harvester 724 | 67 hp | 6,262 lb | — | Compare → |
| International Harvester 743 | 67 hp | 6,349 lb | — | Compare → |
| International Harvester 833 | 67 hp | 6,426 lb | — | Compare → |
| International Harvester 784 | 67.5 hp | 5,952 lb | 1977–1984 | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Barreiros 5500 | 67 hp | — | — | Compare → |
| Belarus 500 | 65 hp | 6,100 lb | — | Compare → |
| Barreiros 70.7 | 64 hp | 5,450 lb | — | Compare → |
| Allis Chalmers 6060 | 63.21 hp | 6,465 lb | 1980–1984 | Compare → |
| Allis Chalmers D17 | 63 hp | 4,675 lb | 1957–1967 | Compare → |
Explore
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FAQ
Common questions
How powerful is the International Harvester 634?
The International Harvester 634 has an engine power output of 66 hp. It is powered by a 4-cylinder engine displacing 281 ci.
What hitch category is the International Harvester 634?
The International Harvester 634 uses a Category Category 3 hitch.
What is the working weight of the International Harvester 634?
The operating weight of the International Harvester 634 is approximately 7,694 lb.
What type of transmission does the International Harvester 634 have?
The International Harvester 634 uses a Manual transmission offering 8 forward gears.
What routine service does the International Harvester 634 need?
Regular maintenance for the International Harvester 634 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.

