Compare/Allis Chalmers 20-35 vs Allis Chalmers UC

Allis Chalmers 20-35 vs Allis Chalmers UC

Verdict: Allis Chalmers 20-35 vs Allis Chalmers UC

The Allis Chalmers 20-35 and the Allis Chalmers UC are both tractors — here is how they stack up on the figures that matter. Allis Chalmers 20-35 leads on rated power with 20 hp against 19 hp. Allis Chalmers UC is the lighter machine (2,637 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 UC is the newer design (1933 vs 1922). In short: choose the Allis Chalmers 20-35 for outright pulling power, or the Allis Chalmers UC 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

19 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Allis ChalmersReference

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

Allis 300 ci 4-speed 2WDJune 16 - August 8, 1935Link: Nebraska Tractor Test 238 fileReference

Total built

—

1,541 UC CaneReference

Engine

Fuel tank

94.6 LReference

90.8 LReference

Aux. fuel

29.3 LReference

3.8 LReference

Drawbar (claimed)

14.9 kWReference

14.2 kWReference

Belt (claimed)

26.1 kWReference

23.1 kWReference

Plows

4Reference

3Reference

Drawbar (tested)

24.8 kWReference

15.8 kWReference

Belt (tested)

33.0 kWReference

25.4 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

—

Max power

24.8 kWReference

—

Belt power (max):

—

25.4 kWReference

Max power:

—

17.7 kWReference

Transmission

Type

unsynchronized gearReference

non-synchronized gearReference

Gears

2 forward and 1 reverseReference

4 forward and 1 reverseReference

Clutch

hand-operated expanding shoeReference

—

Dimensions

Weight

3011 kgReference

2637 kgReference

Front tire

36x6Reference

24x5Reference

Rear tire

50x12Reference

42x2Reference

Ag front

36x6 steelReference

6.00x16Reference

Ag rear

50x12 steelReference

12.75x24Reference

Length

342 cmReference

368 cmReference

Height

172 cmReference

176 cmReference

Wheelbase

—

220 cmReference

20-35 Serial Numbers

1923

6161Reference

—

1924

6397Reference

—

1925

6755Reference

—

1926

7369Reference

—

1927

8070Reference

—

1928

9870Reference

—

1929

16762Reference

—

1930

23252Reference

UC1Reference

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

Rear axle near PTOReference

Final

24185Reference

—

Capacities

Diameter

33 cmReference

25 cmReference

Width

167 cmReference

205 cmReference

RPM

930Reference

1095Reference

Speed

—

874.78 meters/minReference

Test results

Belt fuel use (max)

18.9 l/hourReference

—

Max pull

1995 kgReference

—

Belt fuel use (max):

—

15.5 l/hourReference

Max pull:

—

1176 kgReference

Variants

—

standardReference

—

row-cropReference

UC Serial Numbers

1931

—

UC39Reference

1932

—

UC1100Reference

1933

—

UC1232Reference

1934

—

UC1294Reference

1935

—

UC1552Reference

1936

—

UC2001Reference

1937

—

UC2771Reference

1938

—

UC3757Reference

1939

—

UC4547Reference

1940

—

UC4770Reference

1941

—

UC4972Reference

1944

—

5038Reference

1945

—

-Reference

1946

—

-Reference

1947

—

5068Reference

1948

—

5268Reference

1949

—

5526Reference

1950

—

5644Reference

1951

—

5806Reference

1952

—

5939Reference

1953

—

6143Reference

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.