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International Harvester 946

Built: 6/1971–6/1977 · Series: C-Familie

More machines from model year 1971

The International Harvester 946 belongs to the C-Familie series. Production: 6/1971–6/1977. The engine delivers 85 hp (62.2 kW), has 6 cylinders, with a displacement of 5,073 cm³. The machine is 3,912 mm long, 2,060 mm wide and 2,568 mm high. The unladen weight is 3,600 kg. The wheelbase measures 2,590 mm. Ground clearance is 470 mm. Top speed is 25 km/h. The engine is water-cooled. Tyres: front 7.50-18 (A: 10-24), rear 14-34. The fuel is diesel. The bore measures 98.4 mm. The stroke is 111.1 mm. Construction: combined frame and unit construction. Around 4188 units were built. The C-Familie series covers 5 models. Rated output within it ranges from 85 to 100 hp; the 946 sits at the bottom of that range with 85 hp. Its immediate neighbours are the 955 above it with 90 hp. Unladen weight within it ranges from 3,600 to 4,370 kg; here the 946 sits at the bottom of that range with 3,600 kg. 391 International Harvester models across 45 series are on record.

International Harvester 946 to 1055XL (1970s) – the six-cylinders from Doncaster: XL for the comfort cab, throughout a 5.1 to 5.9-litre diesel, 62 to 74 kW, 318 to 381 Nm

International Harvester built its own range of larger six-cylinder field tractors for the European market at its British Doncaster plant, to which the 946, 955 and 1055 models belong. The number in the type designation orders the power class in ascending order, the XL suffix marks the more comfortable cab specification against the base version – the 955XL and 1055XL offered a roomier, better-insulated cab compared with the 946 and 955, with largely the same engines underneath.

Read on 3 more paragraphs

The register lists 5 versions uniformly with six cylinders, engines of 5,073 to 5,867 cm³, outputs of 62.2 to 74 kW and a rated speed around 2,200 rpm. On four models torque falls between 318.8 and 381 Nm; service weights range from 3,600 to 4,370 kg, lengths from 3,912 to 4,194 mm.

The Doncaster six-cylinders occupied the upper mid segment of European field tractors in the 1970s, competing with Ford, Massey Ferguson and the then-strengthening Fendt range; IH tractors were technically regarded as solid, if less widespread than the established European brands. After the sale of IH's agricultural division to Case in the early 1980s, the Doncaster models were carried over into Case IH ranges.

On used tractors, operating hours, the condition of clutch and multi-stage gearbox, hydraulic pump and linkage, the tightness of the cab glazing on XL models, and rust on frame and wings count; parts supply runs through Case IH as legal successor.

Sources: SpecCodex register, model data: International Harvester C-Familie, Case IH (Rechtsnachfolger International Harvester)

Technical data

Engine

Fuel	dieselcorrect
Power	85 hp (62.2 kW)correct
Rated speed	2100/2200 rpmcorrect
Cylinders	6correct
Displacement	5,073 cm³correct
Bore	98.4 mmcorrect
Stroke	111.1 mmcorrect
Cooling	water-cooledcorrect

Dimensions and weights

Length	3,912 mmcorrect
Width	2,060 mmcorrect
Height	2,568 mmcorrect
Wheelbase	2,590 mmcorrect
Ground clearance	470 mmcorrect
Unladen weight	3,600 kgcorrect

Drivetrain and chassis

Drive	rear- or four-wheel drivecorrect
Gearbox	12/5-Getriebecorrect
Front tyres	7.50-18 (A: 10-24)correct
Rear tyres	14-34correct
Top speed	25 km/hcorrect

Origin and approval

Construction	combined frame and unit constructioncorrect
Units built	4,188correct

Where this model stands

Power-to-weight ratio: 17.3 kW/t (62 kW / 3.6 t)

Power class: Universal (40–100 hp)

Stronger than 58% 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 Harvester 946 have?

The International Harvester 946 delivers 85 hp.

How much does the International Harvester 946 weigh?

The unladen weight is 3,600 kg.

What engine does the International Harvester 946 have?

6 cylinders, 5,073 cm³ displacement, Diesel.

How fast does the International Harvester 946 go?

Top speed is 25 km/h.

What are the dimensions of the International Harvester 946?

3,912 mm × 2,060 mm × 2,568 mm.

When was the International Harvester 946 built?

Production years: 6/1971–6/1977.

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 22 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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