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International Farmall 400

Built: 1954–1956 · Series: 100 er-Baureihe

More machines from model year 1954

The International Farmall 400 belongs to the 100er series. Production: 1954–1956. The engine delivers 45.6 hp (33.5 kW), has 4 cylinders, with a displacement of 4,324 cm³. Torque is 553 Nm. Rated speed is 1,450 rpm. The machine is 3,585 mm long, 2,134 mm wide and 2,007 mm high. The unladen weight is 2,699 kg. The wheelbase measures 2,432 mm. Ground clearance is 572 mm. Top speed is 27 km/h. Transmission: 5 V/1 R or 10 V/2 R. The engine is water-cooled. Tyres: front 6.00 x 16, rear 13 x 38. The fuel is Benzin/LPG. The bore measures 101.6 mm. The stroke is 133.35 mm. The compression ratio is 6.3:1. Maximum torque is reached at 1,075 rpm. Construction: frame construction. Around 31.806 units were built. The 100 er-Baureihe series covers 4 models. Rated output within it ranges from 22.3 to 45.6 hp; the 400 sits at the top of that range with 45.6 hp. Its immediate neighbours are the 400 Diesel below it with 44.5 hp. Unladen weight within it ranges from 1,433 to 3,078 kg; here the 400 sits in the upper part of that range with 2,699 kg. 24 International Farmall models across 6 series are on record.

International Farmall 100 series – successor to the Letter Series from 1954: four-cylinders, 16.4 to 33.5 kW, petrol, LPG and first diesel version

The 100 series replaced International Harvester's previous Letter Series (A, B, C, H, M) from 1954. The type numbers from 100 to 450 order the models by ascending size class; the register here holds the 200, 300, 400 and 400 Diesel types. With the 400 Diesel, International Harvester brought its first diesel-engined tractor to market in 1955 as an alternative to the previous petrol and LPG engines.

Read on 3 more paragraphs

The register lists here four versions with 16.4 to 33.5 kW from four-cylinder engines of 2,011 to 4,324 cm3 displacement. Unladen weight ranges from 1,433 to 3,078 kg, overall length from 3,124 to 3,585 mm, width from 2,108 to 2,305 mm and height from 1,899 to 2,007 mm. Torque ranges from 216 to 553 Nm at a rated speed of 1,450 to 1,750 rpm. Fuels available side by side are petrol, petrol with LPG operation, and diesel.

The 100 series shaped the North American market for mid-power field tractors in the 1950s and competed directly with John Deere, Allis-Chalmers and Ford, while the adjustable rear-axle track allowed use across row crops of differing widths.

On these now decades-old American tractors, what counts is rust on the frame and sheet metal, the condition of the clutch and gearbox, on the petrol and LPG engines the ignition and carburettor or gas system, on the diesel model the injection pump and injectors, and generally the tightness of the hydraulics and the function of the adjustable rear axle. Spare parts are supplied by vintage-tractor dealers in North America and Europe who specialise in Farmalls.

Sources: SpecCodex register, model data: International Farmall 100er-Baureihe

Technical data

Engine

Fuel	Benzin/LPGcorrect
Power	45.6 hp (33.5 kW)correct
Rated speed	1,450 rpmcorrect
Torque	553 Nmcorrect
Speed at max. torque	1,075 rpmcorrect
Cylinders	4correct
Displacement	4,324 cm³correct
Bore	101.6 mmcorrect
Stroke	133.35 mmcorrect
Compression ratio	6.3correct
Cooling	water-cooledcorrect

Dimensions and weights

Length	3,585 mmcorrect
Width	2,134 mmcorrect
Height	2,007 mmcorrect
Wheelbase	2,432 mmcorrect
Ground clearance	572 mmcorrect
Unladen weight	2,699 kgcorrect

Drivetrain and chassis

Drive	rear-wheel drivecorrect
Gearbox	5 V/1 R or 10 V/2 Rcorrect
Front tyres	6.00 x 16correct
Rear tyres	13 x 38correct
Top speed	27 km/hcorrect

Origin and approval

Construction	frame constructioncorrect
Units built	31,806correct

Where this model stands

Power-to-weight ratio: 12.4 kW/t (34 kW / 2.7 t)

Power class: Universal (40–100 hp)

Stronger than 30% of the tractors in the register — out of 15,663 models with a stated power figure.

Calculated from the documented figures above — not a rating.

Frequently asked questions

How much power does the International Farmall 400 have?

The International Farmall 400 delivers 45.6 hp.

How much does the International Farmall 400 weigh?

The unladen weight is 2,699 kg.

What engine does the International Farmall 400 have?

4 cylinders, 4,324 cm³ displacement, Benzin/LPG.

How fast does the International Farmall 400 go?

Top speed is 27 km/h.

What are the dimensions of the International Farmall 400?

3,585 mm × 2,134 mm × 2,007 mm.

When was the International Farmall 400 built?

Production years: 1954–1956.

What to check before buying

Check the hour meter against the service records — a replaced instrument is the most common gap.
Compare the data plate and chassis number with the papers.
Check the weights in the papers against the figures here — attachments change them.
Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
Shift the gearbox cold and warm — jumps only show up at temperature.
Load the hydraulics and watch for sag.
Ask about parts availability for this build year — the running costs hang on it.

A general list for this type of machine — no substitute for an inspection or an appraiser.

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This page carries 25 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.

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