- WhichTractor size: Standard-size
- No lab test on file
- 1981–1984
- 272 built
WhichTractor size, not the maker’s category
Derived by WhichTractor from a sourced three-point linkage. How we decide what a machine is
International Harvester 6388 specs: hp, weight, years
INTERNATIONAL HARVESTER DT-436 B six-cylinder diesel. The manufacturer claimed 130.2 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.
Engine power, claimed · gross or net not stated
130.2 hp
97.1 kW as stated by the source
No lab test on file
Claimed · standard not stated by the source
Source · Traktorenlexikon, “IHC 6388”, claimed
This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.
- Weight
- 17,421 lb
- 3-point lift
- 7,937 lb
- Hyd. flow
- 18.0 gpm
- Top speed
- 18.6 mph
International Harvester 6388 specs: key facts
The International Harvester 6388 was built from 1981 to 1984.
The International Harvester 6388 has a claimed engine power (gross or net not stated) of 97.1 kW (130.2 hp); it has no measured PTO figure.
The International Harvester 6388 is four-wheel drive (4WD).
The International Harvester 6388 has a INTERNATIONAL HARVESTER DT-436 B engine, a 6-cylinder 7.15 L diesel unit.Source 1
The International Harvester 6388 weighs 7,902 kg (17,421 lb) unladen.
The International Harvester 6388 has a rear PTO running at 540/1000 rpm.
The three-point hitch of the International Harvester 6388 lifts 3,600 kg (7,937 lb) at the lower-link ends.
The hydraulic pump of the International Harvester 6388 delivers 68.1 L/min (18.0 gpm).
Source · Traktorenlexikon, “IHC 6388”
How does the 6388 compare with its class?
- Strength:
A 337 L fuel tank is high for its class — 47% above the median of 230 L across the 256 machines within 10% of its power that hold this figure.
- Worth knowing:
An unladen mass of 7,902 kg is high for its class — 42% above the median of 5,570 kg across the 273 machines within 10% of its power that hold this figure.
- Limitation:
The power figure is a manufacturer claim, not a measurement. No laboratory test report exists for this machine. Of the 273 tractors within 10% of its power, 11% carry one.
Derived by WhichTractor from 273 comparable records. How we work this out

How much horsepower does a 6388 have?
The only figure for the 6388 is 130.2 hp (97.1 kW) of claimed engine power, gross or net not stated, no test standard stated — not power at the shaft.
Source · Traktorenlexikon, “IHC 6388”
What engine is in a 6388?
A 6388 has an INTERNATIONAL HARVESTER DT-436 B, a 6-cylinder 7.15 L diesel engine.
| Make & model | INTERNATIONAL HARVESTER DT-436 B |
|---|---|
| Cylinders | 6, liquid-cooledSource 2 |
| Displacement | 436.0 ci · 7.15 L |
| Electrical system | 12 VSource 2 |
Source · Traktorenlexikon, “IHC 5088”
How much will a 6388 lift, and what is its hydraulic flow?
A 6388 lifts 7,937 lb (3,600 kg) at the lower-link ends.
| Pump flow | 18.0 gpm · 68.1 L/min |
|---|---|
| Lift at ends | 7,937 lb · 3,600 kg |
| Rear PTO | 540/1000 rpm @ 2,106 engine rpm |
Source · Traktorenlexikon, “IHC 6388”
What transmission does a 6388 have?
Transmission specifications for the 6388 are below.
| Steering | Hydraulic steering and adjustable steering wheel |
|---|---|
| Top speed | 18.6 mph · 30 km/h |
Source · Traktorenlexikon, “IHC 6388”
How much does a 6388 weigh?
A 6388 weighs 17,421 lb (7,902 kg) unladen.
| Unladen weight | 17,421 lb · 7,902 kg |
|---|---|
| Wheelbase | 110.0 in · 2,794 mm |
| Length | 227.0 in · 5,766 mm |
| Width | 101.6 in · 2,581 mm |
| Height | 114.7 in · 2,913 mm |
| Ground clearance | 22.0 in · 559 mm |
| Front track | 59.8–104.0 in · 1,519–2,642 mmWikibooks gives one track for both axles |
| Rear track | 59.8–104.0 in · 1,519–2,642 mmWikibooks gives one track for both axles |
Source · Traktorenlexikon, “IHC 6388”
What oil does a 6388 take, and how much?
A 6388 engine takes 20.0 qt (18.9 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.
| System | Capacity |
|---|---|
| Engine oil | 20.0 qt · 18.9 LSource: Traktorenlexikon, “IHC 6388” · single source, not independently verified |
| Transmission & hydraulic | 94.5 qt · 89.4 LSource: Traktorenlexikon, “IHC 6388” · single source, not independently verified |
| Cooling system | 34.0 qt · 32.2 LSource: Traktorenlexikon, “IHC 6388” · single source, not independently verified |
Always confirm against the operator’s manual for your machine before service.
Which tractors compare with a 6388?
Within 10% of its 128.6 hp at the PTO as the maker claimed it, with no laboratory test on file, the same type, and first built within 15 years of it.
- Ford 9600 (A)128.4 hp PTO, claimed · 1972–1976Side by side with the 6388 →
- VOLVO-BM 2650128 hp PTO, claimed · 1978–1984Side by side with the 6388 →
- VOLVO-BM 2654128 hp PTO, claimed · 1978–1984Side by side with the 6388 →
- VOLVO-BM T 2650128 hp PTO, claimed · 1978–1984Side by side with the 6388 →
- VOLVO-BM T 2654128 hp PTO, claimed · 1978–1984Side by side with the 6388 →
- OLIVER 2155128.1 hp PTO, claimed · 1970–1972Side by side with the 6388 →
Common questions about the International Harvester 6388
Is a 6388 two-wheel drive or four-wheel drive?
The International Harvester 6388 is four-wheel drive (4WD).
What PTO does a 6388 have?
A 6388 has a 540/1000 rpm rear PTO.
Sources and how this page was built
Compiled from Traktorenlexikon, “IHC 5088”; and Traktorenlexikon, “IHC 6388”.
Sources
Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution
- Traktorenlexikon: IHC 5088 — CC BY-SA 4.0, WIKIBOOKS-TL-119116 · revision 1036846. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: IHC 6388 — CC BY-SA 4.0, WIKIBOOKS-TL-119180 · revision 1037679. Wikibooks contributors (Traktorenlexikon). Original document