Compare/Allis Chalmers 185 vs Allis Chalmers S

Allis Chalmers 185 vs Allis Chalmers S

Verdict: Allis Chalmers 185 vs Allis Chalmers S

The Allis Chalmers 185 and the Allis Chalmers S are both tractors — here is how they stack up on the figures that matter. Allis Chalmers S leads on rated power with 84 hp against 75 hp. Allis Chalmers 185 is the lighter machine (3,043 kg vs 9,117 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers 185 is the newer design (1970 vs 1937). In short: choose the Allis Chalmers S for outright pulling power, or the Allis Chalmers 185 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

75 hp

84 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Allis ChalmersReference

With 18.4-28 rear tires.Reference

PTO performanceReference

Total built

14,961Reference

1,225Reference

Original price

$18,891Reference

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Drive

—

crawlerReference

Engine

Drawbar (tested)

47.6 kWReference

51.4 kWReference

Displacement

4.9 LReference

11.1 LReference

Bore/Stroke

98 x 108 mmReference

146 x 165 mmReference

Compression

16.25:1Reference

5:1Reference

Rated RPM

2200Reference

1050Reference

Firing order

1-5-3-6-2-4Reference

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Starter volts

12Reference

6Reference

Oil capacity

25.6 LReference

21.8 LReference

Coolant capacity

16.1 LReference

47.3 LReference

Power at rated engine speed

55.8 kWReference

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Max power

47.6 kWReference

51.4 kWReference

Fuel tank

—

242.2 LReference

Drawbar (claimed)

—

35.8 kWReference

Belt (claimed)

—

49.2 kWReference

Belt (tested)

—

55.8 kWReference

Fuel system

—

mechancal injectionReference

Air cleaner

—

oil bathReference

Belt power (max)

—

55.8 kWReference

Transmission

Allis-Chalmers Power DirectorReference

—

Gears

8 forward and 2 reverseReference

5 forward and 1 reverseReference

Clutch

—

dry discReference

PTO & Hydraulics

PTO (tested)

55.8 kWReference

62.9 kWReference

Hydraulic system

24.6 LReference

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Type

partial power shiftReference

gearReference

Capacity

24.6 LReference

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Valves

2Reference

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Total flow

75.7 lpmReference

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Rear Type

IIReference

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Rear PTO

continuousReference

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Rear PTO Type

540/1000Reference

—

Power at rated PTO speed

52.7 kWReference

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Capacities

Fuel

93.1 LReference

—

Dimensions

Wheelbase

251 cmReference

—

Weight

3043 kgReference

9117 kgReference

Front tire

7.50-16Reference

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Rear tire

16.9-28Reference

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Ag front

10.00-16Reference

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Ag rear

18.4-30Reference

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Length

401 cmReference

370 cmReference

Width

194 cmReference

246 cmReference

Clearance (front axle)

52 cmReference

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Clearance (rear axle)

83 cmReference

—

Front tread

134 to 195 cmReference

—

Rear tread

147 to 236 cmReference

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Operating

3043 kgReference

—

Ballasted

4263 kgReference

—

Steering wheel

194 cmReference

—

Height

—

187 cmReference

Gauge

—

157 cmReference

Allis Chalmers 185 attachments

185 Serial Numbers

1970

1001Reference

—

1971

1952Reference

—

1972

2935Reference

—

1973

3763Reference

—

1974

4961Reference

—

1975

6542Reference

—

1976

8292Reference

—

1977

10003Reference

—

1978

11631Reference

—

1979

13160Reference

—

1980

14672Reference

—

1981

15648Reference

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Location:

Torque housingReference

transmission case or instrument panelReference

Final

15961Reference

—

Electrical

Ground

negativeReference

—

Charging system

alternatorReference

—

Charging amps

55Reference

—

Allis Chalmers 185 Height

Hood

155 cmReference

—

Exhaust

242 cmReference

—

Test results

Fuel use

18.5 l/hourReference

31.0 l/hourReference

Max pull

3432 kgReference

5156 kgReference

Belt fuel use (max)

—

22.7 l/hourReference

Speeds

Variants

—

gasolineReference

—

spark-ignition dieselReference

—

wideReference

S Serial Numbers

1937

—

3Reference

1938

—

413Reference

1939

—

585Reference

1940

—

1085Reference

1941

—

1128Reference

1942

—

1212Reference

Last

—

1227Reference

Allis Chalmers S Tracks

Length on ground

—

195 cmReference

Area on ground

—

1.8 m²Reference

Ground pressure

—

0.5 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.