International Harvester 3388
Power
145 hp[P] hp
Production
1978-1981
Engine
Turbocharged diesel, 6-cylinder
Transmission
Torque Amplifier
Drive
4WD
From the same series:
Introduction
International Harvester 3388 4WD Tractor
Produced between 1978 and 1981, the International Harvester 3388 is a four-wheel-drive tractor designed for heavy-duty agricultural operations. This model belongs to a series of articulated-frame tractors engineered for high-traction applications.
Engine and Performance
The tractor is powered by the International Harvester DT-436B, a 7.1-liter (436 ci) six-cylinder turbocharged diesel engine. It features liquid cooling and a rated speed of 2400 RPM, providing 145 horsepower for demanding field tasks.
Transmission and Drivetrain
Equipped with a two-range power shift transmission, the unit offers 16 forward and 8 reverse gears. It includes a Torque Amplifier, which allows for on-the-fly gear adjustment to manage varying load conditions, and a 356mm dry disc clutch.
Hydraulics and PTO
The 3388 utilizes a closed-center hydraulic system with two valves, delivering a pump flow of 12 gpm (45.4 lpm). The independent rear PTO operates at 540 or 1000 RPM, selectable based on the engine RPM, supporting a Category III rear hitch system.
Dimensions and Chassis
The tractor features a 110-inch (279 cm) wheelbase, providing stability for its 576 cm length. It is fitted with 16.9-38 tires on both the front and rear axles. Operational safety is managed through hydrostatic power steering and hydraulic wet disc brakes.
Conclusion
The International Harvester 3388 is a robust, specialized 4WD tractor suited for large-scale farming where consistent power and traction are required. Its combination of a high-torque engine and a multi-range transmission makes it a reliable asset for heavy cultivation and implement handling.
Production Information of International Harvester, 3388
- Original price was $45,680 in 1981
- Four-wheel Drive (4WD) tractor
| Manufacturer | International Harvester |
|---|---|
| Total built | 2,146 |
Dimension and Tires Information of International Harvester, 3388
| Wheelbase | 110 inches [279 cm] |
|---|---|
| Clearance (front axle) | 22 inches [55 cm] |
| Height (cab) | 114.7 inches [291 cm] |
| Length | 227 inches [576 cm] |
| Clearance (rear axle) | 25.6 inches [65 cm] |
| Width | 101.6 inches [258 cm] |
| Ag front | 16.9-38 |
|---|---|
| Ag rear | 16.9-38 |
Engine Specifications of International Harvester, 3388
- International Harvester DT-436B
- Liquid-cooled
- Turbocharged diesel
- 6-cylinder
| Oil capacity | 20 qts [18.9 L] |
|---|---|
| Displacement | 436 ci [7.1 L] |
| Rated RPM | 2400 |
| Bore/Stroke | 4.30x5.00 inches [109 x 127 mm] |
| Coolant capacity | 34 qts [32.2 L] |
| Starter volts | 12 |
| Idle RPM | 780-2645 |
| Air cleaner | Dual paper elements |
Transmission Information of International Harvester, 3388
Transmission variants 1
- Four gears (1-4) in two ranges (low-high) with two-range power shift between direct-drive and Torque Amplifier.
| Transmission | Torque Amplifier |
|---|---|
| Clutch | 356mm dry disc |
| Type | Two-range power shift |
| Gears | 16 forward and 8 reverse |
Mechanical Specs of International Harvester, 3388
- Four-wheel drive
- Cab standard
- Hydraulic wet disc brakes
| Steering | Hydrostatic power |
|---|
Power Information of International Harvester, 3388
| Rear PTO | Independent |
|---|---|
| Rear PTO(optional) | 1000@2100 |
| Rear PTO Type | 540/1000 |
| Engine RPM | 540@2100 |
Hydraulics Specifications of International Harvester, 3388
| Type | Closed center |
|---|---|
| Valves | 2 |
| Pump flow | 12 gpm [45.4 lpm] |
Three-Point Hitch of International Harvester, 3388
| Rear Type | III |
|---|
Electrical System of International Harvester, 3388
| Ground | Negative |
|---|---|
| Batteries | 2 |
| Batteries(optional) | 100 |
| Charging system | Alternator |
| Battery volts | 12 |
| Charging amps | 72 |
Where it sits
With 145 hp[P] HP, the International Harvester 3388 sits just below 6388 (157 HP) in International Harvester's range. Its power puts it in the 82th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the International Harvester 3388 have?
The International Harvester 3388 delivers 145 hp[P] HP.
What years was the International Harvester 3388 produced?
The International Harvester 3388 was produced in 1978-1981.
What engine does the International Harvester 3388 have?
The International Harvester 3388 is powered by a Turbocharged diesel, 6-cylinder engine.
What transmission does the International Harvester 3388 use?
The International Harvester 3388 uses a Torque Amplifier transmission.
Is the International Harvester 3388 4WD?
The International Harvester 3388 is available in 4WD.