WhichTractor
  • WhichTractor size: Utility
  • No lab test on file
  • 1965–1972
  • 17,571 built

It was ranked on an engine power figure whose source does not say gross or net. WhichTractor size, not the maker’s category

International Harvester 523 Transmission specs

11 transmission values on record for the 523.

Engine power, claimed · gross or net not stated

47.1 hp

35.1 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “IHC 523”, 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.

How fast will a 523 go?

The fastest speed on record for a 523 is 12.4–18.6 mph (20–30 km/h). The gearbox itself is not on record yet.

Transmission — 523 Transmission
DriveAvailable in two-wheel and four-wheel drive
Forward gears8–12Source 2On record for 1 of 4 configurationsthe article lists alternatives
Reverse gears4Source 2On record for 1 of 4 configurations
Transmission as described8/4 or 12/4 gearbox
ClutchPedal-operated dry single-disc clutchSource 2On record for 1 of 4 configurations
Top speed forward12.4–18.6 mph · 20–30 km/h
Top speed reverse12.3 mph · 19.8 km/hhighest reverse speed printed in the article's speed tables
Service brakesPedal-operated disc brake positioned on the differential half-shaftsSource 2On record for 1 of 4 configurations
SteeringMechanical steering
Differential lockFoot-operated self-releasing differential lock
Front axlePendulum-suspended telescopic front axle with adjustable track width

Source · Traktorenlexikon, “IHC 523”

Sources and how this page was built

11 transmission values from Traktorenlexikon, “IHC 523”; and Traktorenlexikon, “McCormick 523”.

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 523 — CC BY-SA 4.0, WIKIBOOKS-TL-44148 · revision 999836. Wikibooks contributors (Traktorenlexikon). Original document
  2. Traktorenlexikon: McCormick 523 — CC BY-SA 4.0, WIKIBOOKS-TL-118107 · revision 1059859. Wikibooks contributors (Traktorenlexikon). Original document