Compare/Allis Chalmers 20-35 vs Allis Chalmers M

Allis Chalmers 20-35 vs Allis Chalmers M

Verdict: Allis Chalmers 20-35 vs Allis Chalmers M

The Allis Chalmers 20-35 and the Allis Chalmers M are both tractors — here is how they stack up on the figures that matter. Allis Chalmers M leads on rated power with 22 hp against 20 hp. Allis Chalmers M is the lighter machine (2,812 kg vs 3,011 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers 20-35 holds more fuel (94.6 L vs 90.8 L) for longer stints between fills. Allis Chalmers M is the newer design (1932 vs 1922). In short: choose the Allis Chalmers M for outright pulling power, or the Allis Chalmers 20-35 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Acreage600 acBudgetMain crop / use

Fit & specs

Allis Chalmers

Fit score

Best match

Clear

Allis Chalmers

Fit score

Best match

Clear

Rated power

20 hp

22 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Allis ChalmersReference

Gasoline 2-speed 2WDJune 19 - 26, 1928Link: Nebraska Tractor Test 151 fileReference

Gear 2 used for power test.Reference

Total built

—

14,524Reference

Drive

—

crawlerReference

Engine

Fuel tank

94.6 LReference

90.8 LReference

Aux. fuel

29.3 LReference

—

Drawbar (claimed)

14.9 kWReference

16.4 kWReference

Belt (claimed)

26.1 kWReference

23.9 kWReference

Plows

4Reference

—

Drawbar (tested)

24.8 kWReference

22.1 kWReference

Belt (tested)

33.0 kWReference

26.4 kWReference

Displacement

7.6 LReference

5.2 LReference

Bore/Stroke

121 x 165 mmReference

114 x 127 mmReference

Fuel system

Kingston L 1.5" carburetorReference

—

Air cleaner

oil bathReference

Rated RPM

930Reference

1200Reference

Coolant capacity

37.9 LReference

22.7 LReference

Belt power (max)

33.0 kWReference

26.1 kWReference

Max power

24.8 kWReference

21.4 kWReference

Compression

—

4.7:1 (late)Reference

Starter volts

—

6Reference

Oil capacity

—

11.4 LReference

Transmission

Type

unsynchronized gearReference

gearReference

Gears

2 forward and 1 reverseReference

4 forward and 1 reverseReference

Clutch

hand-operated expanding shoeReference

Rockford dry plateReference

Dimensions

Weight

3011 kgReference

2812 kgReference

Front tire

36x6Reference

—

Rear tire

50x12Reference

—

Ag front

36x6 steelReference

—

Ag rear

50x12 steelReference

—

Length

342 cmReference

257 cmReference

Height

172 cmReference

142 cmReference

Gauge

—

101 cmReference

20-35 Serial Numbers

1923

6161Reference

—

1924

6397Reference

—

1925

6755Reference

—

1926

7369Reference

—

1927

8070Reference

—

1928

9870Reference

—

1929

16762Reference

—

1930

23252Reference

—

Location:

Serial number on a plate in front of the steering wheel until 1927. After, the serial number is front of shifter on transmission case.Reference

Right side of transmission caseReference

Final

24185Reference

—

Capacities

Diameter

33 cmReference

—

Width

167 cmReference

145 cmReference

RPM

930Reference

—

Test results

Belt fuel use (max)

18.9 l/hourReference

15.9 l/hourReference

Max pull

1995 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.