International Harvester W400 Tractor, cold start, drive.
Video by AutoArcheologist David Brill
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Years in Production / 1955–1956
International Harvester
W-400
Explore the specifications, hardware, and original references for the International Harvester W-400.
No photo
53hp
Engine estimate · from PTO
2WD Only
Drive
1955–1956
Production years
International Harvester
Manufacturer
W-400 / 01
At a glance
Overview
1955 - 1956
Production
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.
- Manufacturer
- International Harvester
- Total Built
- 2,070 (gas/LP)
- Total Built
- 1,118 (diesel)
- Original Price
- $3,400 (1956)
Mechanical
Two-wheel drive
Mechanical disc brakes
Open operator station.
- Steering
- hydraulic power
Pto
- Rear Pto
- independent
- Rear Type
- 540
Serial Numbers
FAQ: How to read a serial number table.
- 1954
- 501
- 1955
- 510
- 1956
- 2187
- Final
- 3858
W-400 / 02
Under the hood
Engine Detail (Option 1)
International Harvester
gasoline
4-cylinder
liquid-cooled vertical I-head
- Displacement
- 264 ci4.3 L
- Bore Stroke
- 4.00x5.25 inches102 x 133 mm
- Compression Ratio
- 6.3:1
- Rated Rpm
- 1450
- Firing Order
- 1-3-4-2
- Starter Volts
- 6
- Coolant Capacity
- 27 qts25.6 L
- Fuel Type
- gasoline
- Cylinders
- 4
- Cooling
- liquid-cooled vertical I-head
Engine Detail (Option 2)
International Harvester
diesel
4-cylinder
liquid-cooled vertical I-head
- Displacement
- 264 ci4.3 L
- Bore Stroke
- 4.00x5.25 inches102 x 133 mm
- Compression Ratio
- 16.5:1
- Rated Rpm
- 1450
- Firing Order
- 1-3-4-2
- Starter Volts
- 12
- Coolant Capacity
- 29 qts27.4 L
- Fuel Type
- diesel
- Cylinders
- 4
- Cooling
- liquid-cooled vertical I-head
Engine Detail (Option 3)
International Harvester
LP gas
4-cylinder
liquid-cooled vertical I-head
- Displacement
- 264 ci4.3 L
- Bore Stroke
- 4.00x5.25 inches102 x 133 mm
- Compression Ratio
- 8.33:1
- Rated Rpm
- 1450
- Firing Order
- 1-3-4-2
- Starter Volts
- 12
- Coolant Capacity
- 27 qts25.6 L
- Fuel Type
- LP gas
- Cylinders
- 4
- Cooling
- liquid-cooled vertical I-head
Engine Options
International Harvester 4.3L 4-cyl gasoline
International Harvester 4.3L 4-cyl diesel
International Harvester 4.3L 4-cyl LP gas
- Fuel Tank
- 18 gal (gas/diesel)68.1 L
- Fuel Tank
- 31 gal (LP)117.3 L
Engine Options
International Harvester 4.3L 4-cyl gasoline
International Harvester 4.3L 4-cyl diesel
International Harvester 4.3L 4-cyl LP gas
W-400 / 03
Gears & controls
Transmission (Option 1)
- Manufacturer
- International Harvester
- Transmission Type
- sliding gear
- Gears
- 5 forward and 1 reverse
Transmission (Option 2)
The Torque Amplifier (TA) uses a planetary gearset to provide a shift between direct-drive (DD) and the TA underdrive.
- Transmission
- International Harvester Torque Amplifier
- Transmission Type
- partial power shift
- Gears
- 10 forward and 2 reverse
Transmission Options
5-speed sliding gear
10-speed partial power shift
W-400 / 04
Size. Stance. Footprint.
Dimensions And Tires
- Weight
- 6158 to 6550 pounds
- Front Tire
- 6.50-18
- Rear Tire
- 15.00-30
Serial Number Location
Serial plate on the clutch housing, left side of tractor.
Tires And Tracks
- Front Ag
- 6.50-18
- Rear Ag
- 15.00-30
See it in action
Videos
Watch International Harvester W-400 videos from their original YouTube creators.
W-400 / 06
Tests (NTTL)
Tractor Tests
NTTL 533: gasoline Torque Amplifier 2WD
NTTL 535: diesel Torque Amplifier 2WD
NTTL 572: LP gas Torque Amplifier 2WD
Nebraska Tractor Test 533
Gasoline Torque Amplifier 2WDMarch 28 - April 8, 1955
Drawbar performance
Gear 3 used for power test.
Gear 1 used for pull test.
- Id
- 533
- Belt Power Max
- 51.94 hp38.7 kW
- Belt Fuel Use Max
- 4.4 gal/hour16.7 l/hour
- Max Power
- 45.84 hp34.2 kW
- Max Pull
- 6,361 lbs2885 kg
Nebraska Tractor Test 535
Diesel Torque Amplifier 2WDApril 8 - 20, 1955
Drawbar performance
Gear 3 used for power test.
Gear 1 used for pull test.
- Id
- 535
- Belt Power Max
- 46.61 hp34.8 kW
- Belt Fuel Use Max
- 3.4 gal/hour12.9 l/hour
- Max Power
- 41.20 hp30.7 kW
- Max Pull
- 6,476 lbs2937 kg
Nebraska Tractor Test 572
LP gas Torque Amplifier 2WDMay 9 - 25, 1956
Drawbar performance
Gear 3 used for power test.
Gear 1 used for pull test.
- Id
- 572
- Belt Power Max
- 50.72 hp37.8 kW
- Belt Fuel Use Max
- 5.7 gal/hour21.6 l/hour
- Max Power
- 47.30 hp35.3 kW
- Max Pull
- 6,684 lbs3031 kg