International Harvester 6388
Power
157 hp
Production
1981-1984
Engine
Turbocharged diesel, 6-cylinder
Transmission
Two-range power shift
Weight
15960 lbs [7239 kg]
Drive
4WD
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Introduction
International Harvester 6388 articulated tractor
The International Harvester 6388 is a heavy-duty articulated tractor produced between 1981 and 1984. Part of the manufacturer's high-horsepower lineup, this model was engineered to provide significant traction and pulling capability for large-scale agricultural operations.
Engine and Performance
The tractor is powered by a 7.1-liter, 6-cylinder turbocharged diesel engine. It generates a rated power of 157 horsepower at 2400 RPM. The liquid-cooled unit features a bore and stroke of 109 x 127 mm, ensuring consistent performance under sustained high-load conditions.
Transmission and Drive System
The 6388 utilizes a two-range power shift transmission providing 16 forward and 8 reverse gears. The system allows for on-the-move powershifting between gear pairs 1/2, 3/4, 5/6, and 7/8 without the use of a clutch, while synchronized shifts are required for transitions between the 2-3, 4-5, and 6-7 gear ranges. The machine features four-wheel drive combined with articulated hydrostatic power steering for improved maneuverability.
Hydraulics and PTO
The closed-center hydraulic system features a pump flow rate of 18 gpm (68.1 lpm) and a total capacity of 23.6 gallons (89.3 L), supporting between two and four valves for implement control. The rear power take-off (PTO) is independent and offers dual-speed capabilities of 540 and 1000 RPM to accommodate various agricultural implements.
Dimensions and Operator Environment
With a wheelbase of 110 inches (279 cm) and a shipping weight of 15,960 lbs (7,239 kg), the tractor is designed for stability. It is equipped with a standard cab featuring climate control, including heating and air conditioning, with an optional western-finish interior available for increased operator comfort.
Conclusion
The International Harvester 6388 is a robust, articulated tractor suited for heavy-duty field work and large-scale farming applications requiring significant pulling power and versatile hydraulic control.
Production Information of International Harvester, 6388
- Original price was $61,400 in 1984
| Manufacturer | International Harvester |
|---|---|
| Total built | 272 |
Dimension and Tires Information of International Harvester, 6388
| Wheelbase | 110 inches [279 cm] |
|---|---|
| Ground clearance | 27.3 inches [69 cm] |
| Shipping weight | 15960 lbs [7239 kg] |
| Length | 227 inches [576 cm] |
| Width | 101.61 inches [258 cm] |
| Ag front | 16.9-38 |
|---|---|
| Ag rear | 16.9-38 |
Engine Specifications of International Harvester, 6388
- Liquid-cooled
- Turbocharged diesel
- 6-cylinder
| Coolant capacity | 34 qts [32.2 L] |
|---|---|
| Displacement | 436 ci [7.1 L] |
| Rated RPM | 2400 |
| Bore/Stroke | 4.30x5.00 inches [109 x 127 mm] |
| Oil capacity | 20 qts [18.9 L] |
| Starter volts | 12 |
| Power | 157 hp [117.1 kW] |
Transmission Information of International Harvester, 6388
Transmission variants 1
- Left lever selects high, low, or reverse range. Right lever selects gear. On-the-move powershift without the clutch between gear pairs 1/2, 3/4, 5/6, and 7/8. Synchronized shift (with the clutch) from 2-to-3, 4-to-5, and 6-to-7.
| Type | Two-range power shift |
|---|---|
| Gears | 16 forward and 8 reverse |
| Oil capacity | 94.5 qts [89.4 L] |
Mechanical Specs of International Harvester, 6388
- Four-wheel drive
- Cab standard with burgundy finish, heat, and A/C. Optional western finish interior.
| Steering | Articulated hydrostatic power |
|---|
Power Information of International Harvester, 6388
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 540/1000 |
Hydraulics Specifications of International Harvester, 6388
| Type | Closed center |
|---|---|
| Steering flow | 12 gpm [45.4 lpm] |
| Pump flow | 18 gpm [68.1 lpm] |
| Capacity | 23.6 gal [89.3 L] |
| Valves | 2 to 4 |
Three-Point Hitch of International Harvester, 6388
| Rear Type | III/II |
|---|
Where it sits
With 157 HP, the International Harvester 6388 sits between 3388 (145 HP) and 6588 (177 HP) in International Harvester's range. Its power puts it in the 84th percentile of 1980s models in our database (2052 machines).
Frequently asked questions
How much horsepower does the International Harvester 6388 have?
The International Harvester 6388 delivers 157 HP.
What years was the International Harvester 6388 produced?
The International Harvester 6388 was produced in 1981-1984.
What engine does the International Harvester 6388 have?
The International Harvester 6388 is powered by a Turbocharged diesel, 6-cylinder engine.
What transmission does the International Harvester 6388 use?
The International Harvester 6388 uses a Two-range power shift transmission.
How much does the International Harvester 6388 weigh?
The International Harvester 6388 weighs 15960 lbs [7239 kg].
Is the International Harvester 6388 4WD?
The International Harvester 6388 is available in 4WD.