Compare/Allis Chalmers 440 vs Allis Chalmers HD21

Allis Chalmers 440 vs Allis Chalmers HD21

Verdict: Allis Chalmers 440 vs Allis Chalmers HD21

The Allis Chalmers 440 and the Allis Chalmers HD21 are both tractors — here is how they stack up on the figures that matter. Allis Chalmers HD21 leads on rated power with 225 hp against 218 hp. Allis Chalmers 440 is the lighter machine (9,176 kg vs 20,638 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers 440 is the newer design (1973 vs 1954). In short: choose the Allis Chalmers HD21 for outright pulling power, or the Allis Chalmers 440 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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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

218 hp

225 hp

Confidence

40%

Guide price

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Overview

Distributor

Allis ChalmersReference

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Manufacturer

SteigerReference

Allis ChalmersReference

liquid-cooled V8Reference

Drawbar performanceReference

Total built

1,033Reference

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Original price

$38,179Reference

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Final drives

outboard planetaryReference

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Steering

articulated hydraulic powerReference

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Drive

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crawlerReference

Engine

162.6 kWReference

167.8 kWReference

Drawbar (claimed)

123.0 kWReference

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Plows

7-8Reference

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Displacement

9.1 LReference

13.8 LReference

Bore/Stroke

117 x 105 mmReference

133 x 165 mmReference

Power

162.6 kWReference

167.8 kWReference

Compression

17:1Reference

13.3:1Reference

Rated RPM

2800Reference

1800Reference

Starter type

electricReference

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Fuel tank

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511.0 LReference

Drawbar (tested)

—

100.8 kWReference

Air cleaner

—

oil bathReference

Starter volts

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24Reference

Coolant capacity

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75.7 LReference

Max power

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100.8 kWReference

Transmission

EatonReference

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Gears

10 forward and 2 reverseReference

2 forward and 1 reverseReference

Clutch

cerametallic dry discReference

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PTO & Hydraulics

Type

open centerReference

torque converterReference

Pressure

137.9 barReference

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Valves

3Reference

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Pump flow

79.5 lpmReference

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Steering flow

60.6 lpmReference

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Steering press.

103.4 barReference

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Rear Type

III/IVReference

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Dimensions

Weight

9176 kgReference

20638 kgReference

Front tire

23.1-26Reference

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Rear tire

23.1-26Reference

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Ag front

23.1-26Reference

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Ag rear

23.1-26Reference

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Length

579 cmReference

502 cmReference

Width

266 cmReference

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Height

353 cmReference

251 cmReference

HD21 Serial Numbers

Location:

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Steering clutch housing or instrument panelReference

Test results

Max pull

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18399 kgReference

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.