Tractor · 1955Unverified
International Harvester W-400
International Harvester W-400 · 49 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
49 hp
Max power
34.2 kW
Weight
6158 to 6550 pounds
Hover a source tag to verify
Overview
ManufacturerInternational HarvesterReference
Total built2,070 (gas/LP)Reference
Total built1,118 (diesel)Reference
Original price$3,400 (1956)Reference
The International W-400 started as the International 400. In June of 1955 a decision was made to rename it the W-400, bringing the name closer to the "W" series McCormick tractors it replaced.Reference
Two-wheel driveReference
Steeringhydraulic powerReference
Mechanical disc brakesReference
Open operator station.Reference
Variants
400Row-crop version (Farmall)Reference
Engine
International Harvester 4.3L 4-cyl gasolineReference
International Harvester 4.3L 4-cyl dieselReference
International Harvester 4.3L 4-cyl LP gasReference
Fuel tank68.1 LReference
Fuel tank117.3 LReference
Drawbar (claimed)32.7 kWReference
Drawbar (tested)35.3 kWReference
Belt (tested)38.7 kWReference
International HarvesterReference
gasolineReference
4-cylinderReference
liquid-cooled vertical I-headReference
Displacement4.3 LReference
Bore/Stroke102 x 133 mmReference
Compression6.3:1Reference
Rated RPM1450Reference
Firing order1-3-4-2Reference
Starter volts6Reference
Coolant capacity25.6 LReference
dieselReference
Compression16.5:1Reference
Starter volts12Reference
Coolant capacity27.4 LReference
LP gasReference
Compression8.33:1Reference
Belt power (max)38.7 kWReference
Max power34.2 kWReference
Belt power (max)34.8 kWReference
Max power30.7 kWReference
Belt power (max)37.8 kWReference
Max power35.3 kWReference
Transmission
5-speed sliding gearReference
10-speed partial power shiftReference
ManufacturerInternational HarvesterReference
Typesliding gearReference
Gears5 forward and 1 reverseReference
TransmissionInternational Harvester Torque AmplifierReference
Typepartial power shiftReference
Gears10 forward and 2 reverseReference
The Torque Amplifier (TA) uses a planetary gearset to provide a shift between direct-drive (DD) and the TA underdrive.Reference
PTO & Hydraulics
PTO (claimed)36.2 kWReference
Rear PTOindependentReference
Rear PTO Type540Reference
Dimensions
Weight6158 to 6550 poundsReference
Front tire6.50-18Reference
Rear tire15.00-30Reference
Ag front6.50-18Reference
Ag rear15.00-30Reference
Length330 cmReference
Width193 cmReference
Height237 cmReference
Operating2793 kgReference
Operating2971 kgReference
Ballasted4741 kgReference
W-400 Serial Number Location
Serial plate on the clutch housing, left side of tractor.Reference
W-400 Serial Numbers
1954501Reference
1955510Reference
19562187Reference
Final3858Reference
FAQ: How to read a serial number table.Reference
Test results
NTTL 533: gasoline Torque Amplifier 2WDReference
NTTL 535: diesel Torque Amplifier 2WDReference
NTTL 572: LP gas Torque Amplifier 2WDReference
Gasoline Torque Amplifier 2WDMarch 28 - April 8, 1955Link: Nebraska Tractor Test 533 fileReference
Belt fuel use (max)16.7 l/hourReference
Drawbar performanceReference
Gear 3 used for power test.Reference
Max pull2885 kgReference
Gear 1 used for pull test.Reference
Diesel Torque Amplifier 2WDApril 8 - 20, 1955Link: Nebraska Tractor Test 535 fileReference
Belt fuel use (max)12.9 l/hourReference
Max pull2937 kgReference
LP gas Torque Amplifier 2WDMay 9 - 25, 1956Link: Nebraska Tractor Test 572 fileReference
Belt fuel use (max)21.6 l/hourReference
Max pull3031 kgReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.