Compare/Allis Chalmers 20-35 vs Allis Chalmers WF

Allis Chalmers 20-35 vs Allis Chalmers WF

Verdict: Allis Chalmers 20-35 vs Allis Chalmers WF

The Allis Chalmers 20-35 and the Allis Chalmers WF are both tractors — here is how they stack up on the figures that matter. Allis Chalmers WF leads on rated power with 22 hp against 20 hp. Allis Chalmers WF is the lighter machine (1,440 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 56.8 L) for longer stints between fills. Allis Chalmers WF is the newer design (1938 vs 1922). In short: choose the Allis Chalmers WF 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.

Tune the fit score

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

20 hp

22 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Allis ChalmersReference

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

liquid-cooledReference

Engine

Fuel tank

94.6 LReference

56.8 LReference

Aux. fuel

29.3 LReference

3.8 LReference

Drawbar (claimed)

14.9 kWReference

—

Belt (claimed)

26.1 kWReference

—

Plows

4Reference

2Reference

Drawbar (tested)

24.8 kWReference

—

Belt (tested)

33.0 kWReference

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Displacement

7.6 LReference

3.3 LReference

Bore/Stroke

121 x 165 mmReference

102 x 102 mmReference

Fuel system

Kingston L 1.5" carburetorReference

—

Air cleaner

oil bathReference

—

Rated RPM

930Reference

—

Coolant capacity

37.9 LReference

—

Belt power (max)

33.0 kWReference

—

Max power

24.8 kWReference

—

Firing order

—

1-2-4-3Reference

Transmission

Type

unsynchronized gearReference

gearReference

Gears

2 forward and 1 reverseReference

4 forward and 1 reverseReference

Clutch

hand-operated expanding shoeReference

—

Dimensions

Weight

3011 kgReference

1440 kgReference

Front tire

36x6Reference

5.5x16Reference

Rear tire

50x12Reference

11.25x24Reference

Ag front

36x6 steelReference

5.5x16Reference

Ag rear

50x12 steelReference

11x28Reference

Length

342 cmReference

301 cmReference

Height

172 cmReference

—

Wheelbase

—

177 cmReference

Height (hood)

—

139 cmReference

Rear tread

—

116 to 144 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

—

Final

24185Reference

—

Capacities

Diameter

33 cmReference

22 cmReference

Width

167 cmReference

146 cmReference

RPM

930Reference

1170Reference

Speed

—

841.25 meters/minReference

Test results

Belt fuel use (max)

18.9 l/hourReference

—

Max pull

1995 kgReference

—

Variants

—

standardReference

—

row-cropReference

PTO & Hydraulics

PTO (claimed)

—

16.4 kWReference

Rear PTO

—

transmissionReference

Rear PTO Type

—

540Reference

WF Serial Number Location

WF Serial Numbers

1938

—

389Reference

1939

—

1336Reference

1940

—

1892Reference

1941

—

2300Reference

1942

—

2704Reference

1943

—

NoneReference

1944

—

3004Reference

1945

—

3195Reference

1946

—

3510Reference

1947

—

3748Reference

1948

—

4111Reference

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.