Compare/Allis Chalmers CA vs Allis Chalmers M

Allis Chalmers CA vs Allis Chalmers M

Verdict: Allis Chalmers CA vs Allis Chalmers M

The Allis Chalmers CA and the Allis Chalmers M are both tractors — here is how they stack up on the figures that matter. Allis Chalmers CA leads on rated power with 23 hp against 22 hp. Allis Chalmers CA is the lighter machine (1,285 kg vs 2,812 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers CA is the newer design (1950 vs 1932). In short: choose the Allis Chalmers CA for outright pulling power, or the Allis Chalmers M if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Allis Chalmers

Fit score

Best match

Clear

Allis Chalmers

Fit score

Best match

Clear

Rated power

23 hp

22 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Allis ChalmersReference

Gear 1 used for pull test.Reference

Gear 2 used for power test.Reference

Total built

39,499Reference

14,524Reference

Drive

—

crawlerReference

Engine

Drawbar (claimed)

13.4 kWReference

16.4 kWReference

Drawbar (tested)

17.1 kWReference

22.1 kWReference

Belt (tested)

19.4 kWReference

26.4 kWReference

Displacement

2.1 LReference

5.2 LReference

Bore/Stroke

86 x 89 mmReference

114 x 127 mmReference

Air cleaner

oil bathReference

Compression

6.25:1Reference

4.7:1 (late)Reference

Rated RPM

1650Reference

1200Reference

Firing order

1-2-4-3Reference

—

Starter volts

6Reference

Coolant capacity

8.5 LReference

22.7 LReference

Sparkplug

Champion J-8Reference

—

Sparkplug gap

0.762 mmReference

—

Point gap

0.508 mmReference

—

Intake valve clearance

0.305 mmReference

—

Exhaust valve clearance

0.305 mmReference

—

Belt power (max)

19.4 kWReference

26.1 kWReference

Max power

17.1 kWReference

21.4 kWReference

Fuel tank

—

90.8 LReference

Belt (claimed)

—

23.9 kWReference

Transmission

Gears

4 forward and 1 reverseReference

Clutch

dry discReference

Rockford dry plateReference

Oil capacity

3.8 LReference

11.4 LReference

PTO & Hydraulics

PTO (claimed)

17.2 kWReference

—

Hydraulic system

7.6 LReference

—

Capacity

7.6 LReference

—

Pressure

220.6 barReference

—

Type

non-synchronizedReference

gearReference

Rear PTO

liveReference

—

Rear PTO Type

538Reference

—

Capacities

Fuel

49.2 LReference

—

Diameter

20 cmReference

—

Width

13 cmReference

145 cmReference

RPM

1220Reference

—

Speed

778.76 meters/minReference

—

Dimensions

Wheelbase

208 cmReference

—

Weight

1285 kgReference

2812 kgReference

Front tire

5.00-15Reference

—

Rear tire

10-24Reference

—

Ag front

5.00-15Reference

—

Ag rear

10-24Reference

—

Length

317 cmReference

257 cmReference

Height

185 cmReference

142 cmReference

Operating weight

1285 kgReference

—

Ballasted weight

2288 kgReference

—

Front tread

15/33 cmReference

—

Rear tread

132 to 203 cmReference

—

Gauge

—

101 cmReference

CA Serial Numbers

1950

14Reference

—

1951

322Reference

—

1952

10539Reference

—

1953

22181Reference

—

1954

31424Reference

—

1955

32907Reference

—

1956

37203Reference

—

1957

38618Reference

—

1958

38977Reference

—

Location:

On top of transmission, by shift leverReference

Right side of transmission caseReference

Final

39513Reference

—

Electrical

Ground

positiveReference

—

Charging system

generatorReference

—

Charging amps

10Reference

—

Battery volts

6Reference

—

Battery AH

95Reference

—

Test results

Belt fuel use (max)

9.1 l/hourReference

15.9 l/hourReference

Max pull

1613 kgReference

2272 kgReference

Variants

—

standard widthReference

—

wideReference

M Serial Numbers

1932

—

1Reference

1933

—

42Reference

1934

—

402Reference

1935

—

842Reference

1936

—

1942Reference

1937

—

3842Reference

1938

—

7067Reference

1939

—

8127Reference

1940

—

9540Reference

1941

—

11380Reference

1942

—

12947Reference

Allis Chalmers M Tracks

Length on ground

—

143 cmReference

Area on ground

—

0.9 m²Reference

Ground pressure

—

0.3 barReference

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.