International Harvester 323 Transmission specs

The fastest speed on record for a 323 is 12.4 mph (20 km/h). The gearbox itself is not on record yet.

12 transmission values on record for the 323.

Engine power, claimed · gross or net not stated

25.6 hp

19.1 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “McCormick 323”, 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 323 go?

The fastest speed on record for a 323 is 12.4 mph (20 km/h). The gearbox itself is not on record yet.

Transmission — 323 Transmission
Drive	2WD
Forward gears	8–16the article lists alternatives
Reverse gears	2–4the article lists alternatives
Transmission as described	8 forward/2 reverse or 16 forward/4 reverse
Clutch	Pedal operated dry Fichtel and Sachs single disc clutch
Top speed forward	12.4 mph · 20 km/h
Top speed reverse	6.0 mph · 9.72 km/hhighest reverse speed printed in the article's speed tables
Creeper gears available, optional	Yes
Service brakes	Pedal operated International Harvester disc brake on differential half shafts
Steering	Mechanical Ross steering
Differential lock	Pedal operated differential lock
Front axle	Oscillating, sprung portal front axle

Source · Traktorenlexikon, “McCormick 323”

12 transmission values from Traktorenlexikon, “McCormick 323”.

Sources checked

14 SEP 2026

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

Traktorenlexikon: McCormick 323 — CC BY-SA 4.0, WIKIBOOKS-TL-118068 · revision 1059854. Wikibooks contributors (Traktorenlexikon). Original document