Compare/Allis Chalmers 20-35 vs Allis Chalmers C

Allis Chalmers 20-35 vs Allis Chalmers C

Verdict: Allis Chalmers 20-35 vs Allis Chalmers C

The Allis Chalmers 20-35 and the Allis Chalmers C 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 C is the lighter machine (1,134 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 49.2 L) for longer stints between fills. Allis Chalmers C is the newer design (1940 vs 1922). In short: choose the Allis Chalmers 20-35 for outright pulling power, or the Allis Chalmers C 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

Gasoline 3-speed 2WDOctober 28 - November 7, 1940Link: Nebraska Tractor Test 364 fileReference

Total built

—

84,020Reference

Engine

Fuel tank

94.6 LReference

49.2 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

13.7 kWReference

Belt (tested)

33.0 kWReference

—

Displacement

7.6 LReference

2.1 LReference

Bore/Stroke

121 x 165 mmReference

86 x 89 mmReference

Fuel system

Kingston L 1.5" carburetorReference

—

Air cleaner

oil bathReference

Rated RPM

930Reference

1500Reference

Coolant capacity

37.9 LReference

7.6 LReference

Belt power (max)

33.0 kWReference

—

Max power

24.8 kWReference

13.7 kWReference

Compression

—

5.75:1Reference

Firing order

—

1-2-4-3Reference

Starter volts

—

6Reference

Sparkplug

—

AC 45Reference

Sparkplug gap

—

0.889 mmReference

Point gap

—

0.508 mmReference

Intake valve clearance

—

0.254 mmReference

Exhaust valve clearance

—

0.254 mmReference

Oil capacity

—

6.6 LReference

Power at rated engine speed

—

17.4 kWReference

Transmission

Type

unsynchronized gearReference

non-synchronized gearReference

Gears

2 forward and 1 reverseReference

3 forward and 1 reverseReference

Clutch

hand-operated expanding shoeReference

—

Oil type

—

SAE20WReference

Dimensions

Weight

3011 kgReference

1134 kgReference

Front tire

36x6Reference

4.00-15Reference

Rear tire

50x12Reference

9-24Reference

Ag front

36x6 steelReference

6-12Reference

Ag rear

50x12 steelReference

10-24Reference

Length

342 cmReference

289 cmReference

Height

172 cmReference

159 cmReference

Wheelbase

—

195 cmReference

Front tread

—

208 cmReference

Rear tread

—

132 to 203 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

20 cmReference

Width

167 cmReference

173 cmReference

RPM

930Reference

1129Reference

Test results

Belt fuel use (max)

18.9 l/hourReference

—

Max pull

1995 kgReference

1066 kgReference

Fuel use

—

7.6 l/hourReference

PTO & Hydraulics

PTO (tested)

—

17.4 kWReference

Rear PTO

—

transmissionReference

Rear PTO Type

—

560Reference

C Serial Number Location

C Serial Numbers

1940

—

1Reference

1941

—

112Reference

1942

—

12389Reference

1943

—

18782Reference

1944

—

23908Reference

1945

—

30695Reference

1946

—

36378Reference

1947

—

39168Reference

1948

—

51515Reference

1949

—

68281Reference

1950

—

80518Reference

Electrical

Ground

—

positiveReference

Charging system

—

generatorReference

Charging amps

—

12Reference

Battery volts

—

6Reference

Battery AH

—

95Reference

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.