International Harvester 3388 Specs ( 1978-1981 )
Overview
The International Harvester 3388 is a 4WD farm tractor produced from 1978 to 1981, featuring a 7.1L 6-cylinder turbocharged diesel engine and a 16-speed two-range power shift transmission. This model was tested with a PTO output of 130.61 hp and a maximum drawbar pull of 16,764 lbs, while weighing between 16,340 and 17,420 pounds depending on configuration.
Ideal Applications
Tested Power Performance:
Nebraska Tractor Test 1319 recorded a maximum PTO power of 130.61 hp at rated engine speed and a drawbar performance of 111.75 hp using the 4-Lo-DD gear.
Transmission and Drive Configuration:
This tractor is equipped with a four-wheel drive system and a Torque Amplifier transmission providing 16 forward and 8 reverse gears across two ranges.
Chassis and Fluid Capacities:
The unit features a 110-inch wheelbase with 16.9-38 tires on both the front and rear, supported by a 90-gallon fuel tank and a 34-quart coolant capacity.
Production
| Description | Original price was $45,680 in 1981 |
|---|---|
| Drive type | Four-wheel Drive (4WD) tractor |
| Manufacturer | International Harvester |
| Total built | 2,146 |
Engine
| Engine type | International Harvester 7.1L 6-cyl diesel |
|---|---|
| Fuel tank | 90 gal (340.7 L) |
| Air cleaner | dual paper elements |
| Bore/Stroke | 4.30x5.00 inches (109 x 127 mm) |
| Coolant capacity | 34 qts (32.2 L) |
| Description | International Harvester DT-436B / turbocharged diesel / 6-cylinder / liquid-cooled |
| Displacement | 436 ci (7.1 L) |
| Idle RPM | 780-2645 |
| Oil capacity | 20 qts (18.9 L) |
| Rated RPM | 2400 |
| Starter volts | 12 |
| Drawbar (tested) | 111.75 hp (83.3 kW) |
| PTO (tested) | 130.61 hp (97.4 kW) |
Transmission
| Clutch | 356mm dry disc |
|---|---|
| Description | Four gears (1-4) in two ranges (low-high) with two-range power shift between direct-drive and Torque Amplifier. |
| Gears | 16 forward and 8 reverse |
| Transmission | Torque Amplifier |
| Transmission type | 16-speed two-range power shift |
| Type | two-range power shift |
Mechanical
| Cab | Cab standard |
|---|---|
| Description | Hydraulic wet disc brakes |
| Drive type | Four-wheel drive |
| Steering | hydrostatic power |
Hydraulics
| Pump flow | 12 gpm (45.4 lpm) |
|---|---|
| Type | closed center |
| Valves | 2 |
Hitch
| Rear Type | III |
|---|
PTO
| Engine RPM | 540@2100 |
|---|---|
| Rear PTO | independent |
| Rear PTO Type | 540/1000 |
Electrical
| Batteries | 2 |
|---|---|
| Battery volts | 12 |
| Charging amps | 72 |
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| Clearance (front axle) | 22 inches (55 cm) |
|---|---|
| Clearance (rear axle) | 25.6 inches (65 cm) |
| Height (cab) | 114.7 inches (291 cm) |
| Length | 227 inches (576 cm) |
| Wheelbase | 110 inches (279 cm) |
| Width | 101.6 inches (258 cm) |
| Front tire | 16.9-38 |
| Rear tire | 16.9-38 |
| Weight | 16340 to 17420 pounds |
| Wheelbase | 110 inches (279 cm) |
| Ag front | 16.9-38 |
| Ag rear | 16.9-38 |
3388 Serial Numbers
| 1978 | 8801 |
|---|---|
| 1979 | 8816 |
| 1980 | 10037 |
| 1981 | 10714 |
| Description | FAQ: How to read a serial number table. |
| Location: | On the rear tractor frame, right side, near axle. |
International Harvester 3388 Weight
| Ballasted | 17,850 lbs (8096 kg) |
|---|---|
| Max capacity | 22000 lbs (9979 kg) |
| Operating | 17,420 lbs (7901 kg) |
| Shipping | 16340 lbs (7411 kg) |
Nebraska Tractor Test 1319
| Description | Diesel 16-speed 4WDAugust 21 - 27, 1979Link: Nebraska Tractor Test 1319 file / PTO performance / Drawbar performance / Gear 4-Lo-DD used for power test. / Gear 1-Lo-DD used for pull test. |
|---|---|
| Fuel use | 8.4 gal/hour (31.8 l/hour) / 7.6 gal/hour (28.8 l/hour) / 8.3 gal/hour (31.4 l/hour) |
| Max power | 111.75 hp (83.3 kW) |
| Max pull | 16,764 lbs (7604 kg) |
| Power at rated engine speed | 130.61 hp (97.4 kW) |
| Power at rated PTO speed | 128.59 hp (95.9 kW) |
References
| Description | 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 |
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