Production years
1954-1956
Farmall tractor ยท 1954-1956
Farmall 400 Tractor
The Farmall 400 is a 1954-1956 row-crop tractor best known for its 10-speed partial powershift transmission and roughly 45 hp drawbar capability in gasoline form. It is a substantial mid-1950s field tractor with available Fast Hitch and optional independent PTO.
Engine
International Harvester 4.3L 4-cylinder, with gasoline, diesel, or LP-gas versions
Power
45 hp claimed drawbar, gasoline; 43.9 hp claimed drawbar, diesel
Weight, approximate
6,300 lb operating
Farmall 400 specifications
| Production years | 1954-1956 |
|---|---|
| Engine | International Harvester 4.3L 4-cylinder, with gasoline, diesel, or LP-gas versions |
| Power | 45 hp claimed drawbar, gasoline; 43.9 hp claimed drawbar, diesel |
| Transmission | 10-speed partial powershift |
| Weight, approximate | 6,300 lb operating |
| Fuel type | Gasoline, diesel, or LP gas |
| PTO | 540 rpm transmission PTO; independent PTO optional |
What the 400 is used for
The 400 suits period-correct tillage, planting, hay work, and general drawbar jobs where an approximately 45 hp row-crop tractor is appropriate. Its adjustable row-crop layout and Hydra-Touch hydraulics also make it useful with compatible mounted equipment.
It is best treated as a two-wheel-drive vintage field tractor, not a modern loader platform. Match implements to the tractor's hitch, PTO configuration, ballast, and the fuel system fitted to the individual tractor.
Why the Farmall 400 stands out
A 10-speed partial powershift transmission distinguishes the Farmall 400 from many earlier Farmalls, while the 4.3L four-cylinder engine family offered buyers gasoline, diesel, and LP-gas choices. The optional IH Fast Hitch, optional independent PTO, and available power steering broadened its usefulness for its era.
Buying a used Farmall 400
Confirm which engine and PTO arrangement the tractor actually has, because specifications and service needs differ by fuel version and PTO option. During inspection, test every Torque Amplifier range and gear under load, check Hydra-Touch operation and leaks, inspect the Fast Hitch if fitted, and verify charging-system polarity and voltage before buying electrical parts.
Farmall 400 frequently asked questions
How much horsepower does a Farmall 400 have?
TractorData lists 45 hp claimed drawbar power for the gasoline model and 43.9 hp for the diesel model.
Did the Farmall 400 have a live PTO?
It had a 540 rpm transmission PTO as standard; independent PTO was optional.
What years was the Farmall 400 built?
The Farmall 400 was produced from 1954 through 1956.
Specifications are commonly cited figures for general reference; exact figures vary by year and serial number, so confirm against TractorData.com and the machine's records. Values and prices of used tractors vary by condition and region. Page updated Aug 4, 2026.