Compare/Allis Chalmers 645 vs Allis Chalmers HD-16DC

Allis Chalmers 645 vs Allis Chalmers HD-16DC

Verdict: Allis Chalmers 645 vs Allis Chalmers HD-16DC

The Allis Chalmers 645 and the Allis Chalmers HD-16DC are both industrial tractors — here is how they stack up on the figures that matter. Allis Chalmers HD-16DC leads on rated power with 170 hp against 165 hp. Allis Chalmers 645 is the lighter machine (10,401 kg vs 15,739 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers HD-16DC holds more fuel (378.5 L vs 208.2 L) for longer stints between fills. Allis Chalmers 645 is the newer design (1965 vs 1960). In short: choose the Allis Chalmers HD-16DC for outright pulling power, or the Allis Chalmers 645 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

165 hp

170 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Allis ChalmersReference

liquid-cooled inlineReference

liquid-cooledReference

Total built

3012Reference

—

Final drives

planetaryReference

—

Drive

—

crawlerReference

Engine

Fuel tank

208.2 LReference

378.5 LReference

Engine (net)

123.0 kWReference

126.8 kWReference

Displacement

7.0 LReference

13.8 LReference

Bore/Stroke

108 x 127 mmReference

133 x 165 mmReference

Power (net)

123.0 kWReference

126.8 kWReference

Rated RPM

2200Reference

1700Reference

Torque

588.5 NmReference

—

Torque RPM

1600Reference

—

Starter

electricReference

Starter volts

24Reference

Drawbar (claimed)

—

102.2 kWReference

Compression

—

14.5:1Reference

Oil capacity

—

102.2 LReference

Coolant capacity

—

70.0 LReference

Transmission

Type

power shiftReference

torque converterReference

Gears

4 forward and reverseReference

3 forward and 2 reverseReference

PTO & Hydraulics

Pump flow

268.7 lpmReference

—

Steering flow

68.1 lpmReference

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Dimensions

Wheelbase

294 cmReference

—

Weight

10401 kgReference

15739 kgReference

Front tire

17.5-25Reference

—

Rear tire

17.5-25Reference

—

Industrial front

20.5-25Reference

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Industrial rear

20.5-25Reference

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Shipping weight

10401 kgReference

15739 kgReference

Front tread

193 cmReference

—

Rear tread

193 cmReference

—

Length

—

463 cmReference

Height

—

229 cmReference

Ground clearance

—

37 cmReference

Gauge

—

187 cmReference

Allis Chalmers 645 attachments

Variants

HD-16D

—

gearReference

HD-16DC

—

torque converterReference

HD-16DP

—

power shiftReference

Allis Chalmers HD-16DC Tracks

Width

—

243 cmReference

Length on ground

—

273 cmReference

Area on ground

—

2.8 m²Reference

Ground pressure

—

0.6 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.