International Harvester 6388
The International Harvester 6388 is a tractor produced by International Harvester. It is equipped with a 436 ci 7.1 L engine. The listed engine power is Diesel (listed): 157 hp / 117.1 kW. Transmission: 16 forward and 8 reverse. Operating weight: 15960 lbs 7239 kg.
Engine Power
Diesel (listed): 157 hp / 117.1 kW
Fuel & Capacities
89 gal
336.9 L
Transmission
16 forward and 8 reverse
Operating Weight
15960 lbs
7239 kg
Overview
 | 1981 - 1984
60 2+2 Series |
|---|
Production | |
|---|---|
Manufacturer | International Harvester |
Total built | 272 |
Original price was $61,400 in 1984 | |
International Harvester 6388 Engine | |
|---|---|
International Harvester 7.1L 6-cyl diesel | |
Engine details ...  |
International Harvester 6388 Transmission | |
|---|---|
16-speed two-range power shift | |
Transmission details ...  |
International Harvester 6388 Power | |
|---|---|
Engine | 157 hp
117.1 kW |
Drawbar (claimed) | 114 hp
85.0 kW |
PTO (claimed) | 130 hp
96.9 kW |
Drawbar (tested) | 111.75 hp
83.3 kW |
PTO (tested) | 130.61 hp
97.4 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Four-wheel drive | |
Steering | articulated hydrostatic power |
Cab standard with burgundy finish, heat, and A/C. Optional western finish interior. | |
Capacity | |
|---|---|
Fuel | 89 gal
336.9 L |
139 gal (optional)
526.1 L | |
Hydraulic system | 23.6 gal
89.3 L |
Hydraulics | |
|---|---|
Type | closed center |
Capacity | 23.6 gal
89.3 L |
Valves | 2 to 4 |
Pump flow | 18 gpm
68.1 lpm |
Steering flow | 12 gpm
45.4 lpm |
Tractor hitch | |
|---|---|
Rear Type | III/II |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 540/1000 |
Dimensions & Tires | |
|---|---|
Wheelbase | 110 inches
279 cm |
Weight | 15960 lbs
7239 kg |
Front tire | 16.9-38 |
Rear tire | 16.9-38 |
Full dimensions and tires ...  | |
References | |
|---|---|
 | |
Buyer's Guide 1982 published by International Harvester | |
2+2 Tractors 130/150/170 HP published in 1981, by International Harvester |
Engine
Engine Detail — 436 ci / 7.1 L Diesel
Manufacturer | International Harvester DT 436B |
Configuration | turbocharged diesel, 6-cylinder, liquid-cooled |
Displacement | 436 ci
7.1 L |
Bore/Stroke | 4.30x5.00 inches
109 x 127 mm |
Power | 157 hp
117.1 kW |
Rated RPM | 2400 |
Starter volts | 12 |
Oil capacity | 20 qts
18.9 L |
Coolant capacity | 34 qts
32.2 L |
International Harvester 6388 Engine | |
|---|---|
 |
Transmission
Transmission — 16 forward and 8 reverse two-range power shift
Type | two-range power shift |
Gears | 16 forward and 8 reverse |
Oil capacity | 94.5 qts
89.4 L |
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. | |
With 16.9-38 tires. | |
 | |
Dimensions
International Harvester 6388 Tires | |
|---|---|
Ag front | 16.9-38 |
Ag rear | 16.9-38 |
Dimensions | |
|---|---|
Wheelbase | 110 inches
279 cm |
Length | 227 inches
576 cm |
Width | 101.61 inches
258 cm |
Shipping weight | 15960 lbs
7239 kg |
Ground clearance | 27.3 inches
69 cm |
International Harvester 6388 Height | |
|---|---|
Hood | 78.8 inches
200 cm |
Cab | 113 inches
287 cm |
Exhaust | 124.3 inches
315 cm |
Tests
Nebraska Tractor Test 1319 | |
|---|---|
Diesel 16-speed 4WD
August 21 - 27, 1979
Link: Nebraska Tractor Test 1319 file | |
PTO performance | |
Power at rated engine speed | 130.61 hp
97.4 kW |
Fuel use | 8.4 gal/hour
31.8 l/hour |
Power at rated PTO speed | 128.59 hp
95.9 kW |
Fuel use | 7.6 gal/hour
28.8 l/hour |
Drawbar performance | |
Max power | 111.75 hp
83.3 kW |
Fuel use | 8.3 gal/hour
31.4 l/hour |
Gear 4-Lo-DD used for power test. | |
Max pull | 16,764 lbs
7604 kg |
Gear 1-Lo-DD used for pull test. | |
Photos
International Harvester 6388
International Harvester 6388
International Harvester 6388
Recommended Implements & Sizing Guide
Engineering recommendations for International Harvester 6388 based on its 157 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 5 to 7 Bottom (18")5 - 7 铧 (45 cm) | Commercial / Field Scale | Large acreage tillage; requires front ballast weights. |
Rotary Cutter / MowerMowing & Clearing | 15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼 | Commercial / Field Scale | Large commercial field and roadside mowing operations. |
Rotary TillerSeedbed Prep | 90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机 | Commercial / Field Scale | Deep intensive seedbed preparation for commercial row crops. |
Disc HarrowSecondary Tillage | 15 to 22 ft Folding Disc4.5 - 6.7 m 折叠式圆盘耙 | Commercial / Field Scale | Wide commercial field leveling; requires hydraulic remotes. |
Hay BalerHay & Forage | Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m) | Commercial / Field Scale | High-capacity commercial forage harvesting (1000 RPM PTO). |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for International Harvester 6388.
Estimated Continuous Field Runtime: 10.9 hrs
Approximately 10.9 hours of continuous field operation at ~75% rated power on a full tank (89 gal / 336.9 L).
Estimated 75% Load Fuel Burn~8.2 gal/hr (30.9 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
International Harvester 6388 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for International Harvester 6388.
Converted Equivalents:
Horsepower (HP)157 hp
Kilowatts (kW)117.1 kW
Metric Horsepower (PS / CV)159.2 PS
Direct Competitor Comparison
Compare International Harvester 6388 against same-era industry alternatives in the same horsepower class.
Current Model
International Harvester
International Harvester 6388
Engine Power:Diesel (listed): 157 hp / 117.1 kW
★ Baseline Reference
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