WhichTractor
  • WhichTractor size: High-power
  • No lab test on file
  • 1981–1984
  • 347 built

It sits on the standard-size/high-power boundary, so either size is a fair description. WhichTractor size, not the maker’s category

International Harvester 6788 Engine specs

9 engine values on record for the 6788.

Engine power, claimed · gross or net not stated

170.6 hp

127.2 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “IHC 6788”, 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.

What engine is in a 6788?

A 6788 has a INTERNATIONAL HARVESTER DT-466 B, a 6-cylinder 7.64 L diesel engine.

Engine — INTERNATIONAL HARVESTER DT-466 B specifications
Make & modelINTERNATIONAL HARVESTER DT-466 BSource 1
FuelDieselSource 1
Cylinders6Source 1
Displacement466.2 ci · 7.64 LSource 1
CoolingLiquid-cooled
Air cleanerDry air filter
Cylinders6
Displacement8.1 qt · 7.6 L
Bore4.3 in · 109.22 mm
Stroke5.4 in · 135.89 mm
Rated engine speed2,500 rpm

Source · Traktorenlexikon, “IHC 6788”

Sources and how this page was built

9 engine values from Traktorenlexikon, “IHC 3588”; and Traktorenlexikon, “IHC 6788”.

Sources checked

14 SEP 2026

Spotted an error?

Sources

Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution

  1. Traktorenlexikon: IHC 3588 — CC BY-SA 4.0, WIKIBOOKS-TL-119176 · revision 1037669. Wikibooks contributors (Traktorenlexikon). Original document
  2. Traktorenlexikon: IHC 6788 — CC BY-SA 4.0, WIKIBOOKS-TL-119178 · revision 1037674. Wikibooks contributors (Traktorenlexikon). Original document