International Harvester 1456 Transmission specs

The fastest speed on record for a 1456 is 18.6 mph (30 km/h). The gearbox itself is not on record yet.

9 transmission values on record for the 1456.

Engine power, claimed · gross or net not stated

132.2 hp

98.6 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “IHC 1456”, 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 1456 go?

The fastest speed on record for a 1456 is 18.6 mph (30 km/h). The gearbox itself is not on record yet.

Transmission — 1456 Transmission
Drive	Available in two-wheel and four-wheel driveOn record for 0 of 1 configurations
Forward gears	8–16the article lists alternatives
Reverse gears	4–8the article lists alternatives
Transmission as described	8 forward/4 reverse or 16 forward/8 reverse
Clutch	Pedal operated dry single plate clutch
Top speed forward	18.6 mph · 30 km/h
Top speed reverse	10.0 mph · 16.09 km/hhighest reverse speed printed in the article's speed tables
Steering	Hydraulic steering
Differential lock	Mechanically operated differential lock

Source · Traktorenlexikon, “IHC 1456”

9 transmission values from Traktorenlexikon, “IHC 1456”.

Sources checked

14 SEP 2026

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

Traktorenlexikon: IHC 1456 — CC BY-SA 4.0, WIKIBOOKS-TL-118787 · revision 1055411. Wikibooks contributors (Traktorenlexikon). Original document