International Harvester 3388

The International Harvester 3388 is a tractor produced by International Harvester. It is equipped with a 436 ci 7.1 L engine. The listed engine power is 130.61 hp 97.4 kW. Transmission: Torque Amplifier. Operating weight: 16340 to 17420 pounds.

Engine Power

130.61 hp 97.4 kW

Fuel & Capacities

90 gal 340.7 L

Transmission

Torque Amplifier

Operating Weight

16340 to 17420 pounds

Overview

	1978 - 1981 30 2+2 SeriesFour-wheel Drive (4WD) tractor 30 2+2 Series Four-wheel Drive (4WD) tractor

Production
Manufacturer	International Harvester
Four-wheel Drive (4WD) tractor
Total built	2,146
Original price was $45,680 in 1981

International Harvester 3388 Engine
International Harvester 7.1L 6-cyl diesel
Fuel tank	90 gal 340.7 L
Engine details ...

International Harvester 3388 Transmission
16-speed two-range power shift
Transmission details ...

International Harvester 3388 Power
Drawbar (tested)	111.75 hp 83.3 kW
PTO (tested)	130.61 hp 97.4 kW
Performance test details ...

Mechanical
Four-wheel drive
Steering	hydrostatic power
Hydraulic wet disc brakes
Cab standard

Hydraulics
Type	closed center
Valves	2
Pump flow	12 gpm 45.4 lpm

Tractor hitch
Rear Type	III

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540/1000
Engine RPM	540@2100
	1000@2100

Dimensions & Tires
Wheelbase	110 inches 279 cm
Weight	16340 to 17420 pounds
Front tire	16.9-38
Rear tire	16.9-38
Full dimensions and tires ...

Electrical
Ground	negative
Charging system	alternator
Charging amps	72
	100 OptOptional
Batteries	2
Battery volts	12

References

1979 Buyer's Guide published by International Harvester
Field Force published in 1981, by International Harvester
Buyer's Guide 1981 published by International Harvester
Operator's Manual 3388, 3588 and 3788 Tractors (1096188R3) published in 1979

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
Air cleaner	dual paper elements
Rated RPM	2400
Idle RPM	780-2645
Starter volts	12
Oil capacity	20 qts 18.9 L
Coolant capacity	34 qts 32.2 L

Transmission

Transmission — Torque Amplifier

Transmission	Torque Amplifier
Type	two-range power shift
Gears	16 forward and 8 reverse
Clutch	356mm dry disc
Four gears (1-4) in two ranges (low-high) with two-range power shift between direct-drive and Torque Amplifier.

Dimensions

International Harvester 3388 Tires
Ag front	16.9-38
Ag rear	16.9-38

Dimensions
Wheelbase	110 inches 279 cm
Length	227 inches 576 cm
Width	101.6 inches 258 cm
Height (cab)	114.7 inches 291 cm
Clearance (front axle)	22 inches 55 cm
Clearance (rear axle)	25.6 inches 65 cm

International Harvester 3388 Weight
Shipping	16340 lbs 7411 kg
Operating	17,420 lbs 7901 kg
Ballasted	17,850 lbs 8096 kg
Max capacity	22000 lbs 9979 kg

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 3388

Recommended Implements & Sizing Guide

Engineering recommendations for International Harvester 3388 based on its 130.61 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	4 to 5 Bottom (16-18")4 - 5 铧 (40-45 cm)	Heavy Duty	Heavy primary tillage; semi-mounted hitch recommended.
Rotary Cutter / MowerMowing & Clearing	10 to 12 ft Flex-Wing3.0 - 3.6 m 折叠双翼	Heavy Duty	Wide swath pasture and crop residue shredding.
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	5x6 Round Baler or 3x3 Mid Square1.5x1.8 m 大圆捆或中型方捆机	Heavy Duty	High density baling; requires minimum 85 PTO HP.

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 3388.

Estimated Continuous Field Runtime: 13.3 hrs

Approximately 13.3 hours of continuous field operation at ~75% rated power on a full tank (90 gal / 340.7 L).

Estimated 75% Load Fuel Burn~6.8 gal/hr (25.7 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