Allis Chalmers M8 tractor – specifications
Series: Other models
Build year not documented · Data origin: Reference work (Wikipedia/Wikibooks) · sources
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The Allis-Chalmers M8 is a heavy tractor. Dimensions: width 3,327 mm and height 3,048 mm. They determine storage space, transport width and manoeuvrability. Power comes from an air-cooled Continental AOS-895-3 six-cylinder petrol engine.
Heavy tractors of this design are built to pull very large loads over poor ground. The six-cylinder petrol power and large dimensions show that drawbar pull and off-road ability took priority over comfort and fuel economy. For transport and storage, width and height are decisive, as they determine the low-loader, hall doors and clearance heights. Collectors check the completeness of engine, transmission and towing gear. Because of low production numbers and great age, spare parts are usually available only through collectors' exchanges, reproduction or donor machines.
Allis-Chalmers – other models: the collective page of the orange tractors from Milwaukee outside the named ranges, from the 10-18 and 20-35 through the letter models B, C, WC and WD to the 100s (170 to 220)
This page gathers the Allis-Chalmers tractors the register could not assign to a named range – the brand from Milwaukee, Wisconsin, that began in 1914 with the 10-18, was the first maker to introduce pneumatic tyres on a tractor with the Model U in 1932 and created the affordable small tractor for the American family farm with the Model B of 1937, before being sold to Deutz in 1985. The type logic: the early number types 10-18, 12-20 and 20-35 give drawbar and belt power in hp; the letter models A, B, C, CA, WC and WD of the 1930s to 1950s denote model types, not size; the D series (D-10 to D-21) of the 1950s and 1960s orders in ascending order; the 100s (160 to 220) of 1964 to 1975 give roughly the hp class, XT the turbocharger; the 7000s (7010 to 7080) of the 1970s with the Acousta Cab and the 8000s (8010 to 8070) of the 1980s are the last own ranges, the 4W-220 and 4W-305 the articulated tractors, the 5000s and 6000s bought-in compacts from Toyosha and Fiat. The engines are Allis-Chalmers' own as petrol, LPG and diesel versions, Perkins in some diesel models and Toyosha in the Japanese compacts.
Read on 3 more paragraphs
The register lists here 115 versions with 6 to 305 hp from two- to eight-cylinders of 1,002 to 11,973 cm³, widths from 915 to 2,438 mm and heights from 1,191 to 3,531 mm.
From the 1930s to the 1970s Allis-Chalmers was the third big American maker after John Deere and International Harvester; the Persian Orange tractors are collectors' pieces today with their own association, and the brand lived on through Deutz-Allis and AGCO Allis until 2001.
On used tractors, originality, engine condition (carburettor on petrol engines, injection pump on diesels), clutch and transmission (Power Director on the D-17 and the 100s), hydraulics (Traction Booster) and sheet metal count; parts run through collector dealers and AGCO for the late ranges.
Sources: SpecCodex register, model data: Allis-Chalmers (weitere Modelle), Allis-Chalmers (Wikipedia)
Technical data
Engine
| Engine | Continental AOS-895-3 six-cylinder air-cooled petrol enginecorrect |
|---|
Dimensions and weights
| Width | 3,327 mmcorrect |
|---|---|
| Height | 3,048 mmcorrect |
Frequently asked questions
What are the dimensions of the Allis Chalmers M8 tractor?
3,327 mm × 3,048 mm.
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.
- 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 3 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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Other models in this series
Sources: Wikipedia (CC BY-SA 4.0) (retrieved August 2026) · Values adopted and presented in our own form; changes from the source are possible. · Data sources and cross-checks
Tractor in 3D section
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