International Harvester 3788
The International Harvester 3788 is a powerful utility tractor made in 1980 and 1981. It has a strong 4-wheel drive system and can turn easily with its special steering. The tractor has a big diesel engine with 6 cylinders that makes 146 horsepower. This engine is very powerful compared to many other tractors. The 3788 is a large tractor, measuring 228 inches long and weighing 18,620 pounds. This weight is very high for tractors of its kind. It has a cab for the driver to sit in and stay comfortable. The tractor can do many jobs with its three-point hitch in the back and its power take-off that spins at 1000 rpm. It also has 12 forward gears and 6 reverse gears, so the driver can choose the right speed for any task. With its strong engine and heavy build, this tractor is great for tough farm work.

Quick specs
- Category
- Utility
- Engine Power Output
- 146hp
- Operating Weight
- 18,620 lb
- Transmission
- Two-range power shift
At a glance
How the 3788 compares
vs. Utility medianDistribution
Engine Power (hp)
Across all Utility tractors
This model
The 3788 ranks at the 93rd percentile for engine power among recorded utility tractors.
Overview
About the International Harvester 3788
The International Harvester 3788 is a powerful utility tractor made in 1980 and 1981. It has a strong 4-wheel drive system and can turn easily with its special steering. The tractor has a big diesel engine with 6 cylinders that makes 146 horsepower. This engine is very powerful compared to many other tractors. The 3788 is a large tractor, measuring 228 inches long and weighing 18,620 pounds. This weight is very high for tractors of its kind. It has a cab for the driver to sit in and stay comfortable. The tractor can do many jobs with its three-point hitch in the back and its power take-off that spins at 1000 rpm. It also has 12 forward gears and 6 reverse gears, so the driver can choose the right speed for any task. With its strong engine and heavy build, this tractor is great for tough farm work.
Full specifications
Every recorded spec
General
| Manufacturer | International Harvester |
|---|---|
| Model | 3788 |
| Category | Utility tractor |
| Type | 4x4 articulated 4WD |
| Years built | 1980–1981 |
| Operating weight | 18,620lb |
Engine
| Make | International Harvester |
|---|---|
| Model | DT-466B |
| Power | 146hp |
| Cylinders | 6 |
| Displacement | 466ci |
| Bore | 4.3in |
| Stroke | 5.35in |
Transmission
| Type | Two-range power shift |
|---|---|
| Forward gears | 12 |
| Reverse gears | 6 |
Chassis & drive
| Chassis | 4x4 articulated 4WD |
|---|---|
| Drive | 4WD |
| Steering | Hydrostatic power |
| Brakes | Hydraulic wet disc |
| Cab | Cab (standard) |
Hydraulics
| Type | Closed center |
|---|
Power take-off
| Rear PTO | Independent |
|---|---|
| PTO speed | 1,000rpm |
Dimensions
| Length | 228in |
|---|---|
| Width | 101.6in |
| Height | 115.7in |
| Operating weight | 18,620lb |
Capacities
| Cooling system | 8.5gal |
|---|
Head to head
3788 vs. Utility median
How the International Harvester 3788 compares to other Utility tractors
| Spec | This model | Utility median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 146 hp | 55 hp | +165% | 93rd |
| Engine Displacement | 466 ci | 183 ci | +155% | 93rd |
| Cylinders | 6 | 4 | +50% | 93rd |
| Forward Gears | 12 | 12 | at median | 50th |
| Operating Weight | 18,620 lb | 5,303 lb | +251% | 95th |
| Length | 228 in | 137 in | +67% | 95th |
| Width | 102 in | 66 in | +54% | 97th |
| Height | 116 in | 94.1 in | +23% | 93rd |
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 3588 | 150.5 hp | 17,620 lb | 1978–1981 | Compare → |
| International Harvester 1456 | 130 hp | 12,800 lb | — | Compare → |
| International Harvester 1026 | 127 hp | 11,100 lb | — | Compare → |
| International Harvester 1255 | 125 hp | 12,215 lb | — | Compare → |
| International Harvester 4166 | 175 hp | 15,900 lb | 1972–1976 | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| CaseIH 1455 XL | 145 hp | 11,499 lb | — | Compare → |
| Allis Chalmers 8030 | 148 hp | 14,200 lb | 1982–1985 | Compare → |
| AGCO RT135 | 143.94 hp | 15,525 lb | — | Compare → |
| AGCO RT120 | 150 hp | 15,055 lb | — | Compare → |
| Belarus MTZ-142 | 150 hp | — | — | Compare → |
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Gallery
International Harvester 3788 photos






FAQ
Common questions
When was the International Harvester 3788 made?
The International Harvester 3788 was manufactured from 1980 to 1981.
What is the engine power output of the International Harvester 3788?
Rated engine output for the International Harvester 3788 is 146 hp, delivered by a 6-cylinder engine. The engine displaces 466 ci.
What is the operating weight of the International Harvester 3788?
In working trim, the International Harvester 3788 comes in at roughly 18,620 lb.
Which transmission does the International Harvester 3788 use?
The International Harvester 3788 is equipped with a Two-range power shift transmission with 12 forward gears.
What hydraulics does the International Harvester 3788 have?
The International Harvester 3788 uses a Closed center hydraulic system.
What three-point hitch category does the International Harvester 3788 use?
The International Harvester 3788 has a Category Category 3 three-point hitch.
How do I maintain a International Harvester 3788?
Routine service for the International Harvester 3788 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.

