Compare/Allis Chalmers HD16A vs Allis Chalmers HD20

Allis Chalmers HD16A vs Allis Chalmers HD20

Verdict: Allis Chalmers HD16A vs Allis Chalmers HD20

The Allis Chalmers HD16A and the Allis Chalmers HD20 are both tractors — here is how they stack up on the figures that matter. Allis Chalmers HD20 leads on rated power with 175 hp against 163 hp. Allis Chalmers HD16A is the lighter machine (14,288 kg vs 18,597 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers HD20 holds more fuel (454.2 L vs 378.5 L) for longer stints between fills. Allis Chalmers HD16A is the newer design (1955 vs 1951). In short: choose the Allis Chalmers HD20 for outright pulling power, or the Allis Chalmers HD16A 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

163 hp

175 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Allis ChalmersReference

Gear 1 used for pull test.Reference

Drawbar performanceReference

Drive

crawlerReference

Steering

hydraulic clutchesReference

—

Total built

—

3,100Reference

Variants

HD16A

6-speedReference

—

HD16AC

torque converterReference

—

Engine

Fuel tank

378.5 LReference

454.2 LReference

Engine (gross)

121.5 kWReference

—

Engine (net)

110.4 kWReference

130.5 kWReference

Drawbar (claimed)

93.2 kWReference

87.2 kWReference

Belt (claimed)

105.1 kWReference

—

Drawbar (tested)

88.6 kWReference

87.0 kWReference

Belt (tested)

99.8 kWReference

—

Displacement

13.8 LReference

10.8 LReference

Bore/Stroke

133 x 165 mmReference

127 x 142 mmReference

Power (net)

110.4 kWReference

130.5 kWReference

Power (gross)

121.5 kWReference

—

Compression

14.15:1Reference

18.0:1Reference

Rated RPM

1600Reference

1700Reference

Starter volts

24Reference

Belt power (max)

99.8 kWReference

—

Max power

88.6 kWReference

87.0 kWReference

Coolant capacity

—

56.8 LReference

Transmission

Type

gearReference

torque converterReference

Gears

6 forward and 3 reverseReference

2 forward and 1 reverseReference

Dimensions

Weight

14288 kgReference

18597 kgReference

Length

459 cmReference

485 cmReference

Height

229 cmReference

241 cmReference

Ground clearance

36 cmReference

—

Gauge

187 cmReference

—

HD16A Serial Numbers

1955

101Reference

—

1956

1009Reference

—

1957

2463Reference

—

1958

2757Reference

—

1959

4144Reference

—

1960

4726Reference

—

1961

5098Reference

—

1962

5448Reference

—

1963

5732Reference

—

1964

6270Reference

—

1965

6965Reference

—

1966

7468Reference

—

1967

8076Reference

—

1968

8425Reference

—

1969

8794Reference

—

1970

9565Reference

—

Location:

Steering clutch housing or instrument panelReference

Allis Chalmers HD16A Tracks

Width

243 cmReference

277 cmReference

Test results

Belt fuel use (max)

34.4 l/hourReference

—

Max pull

13037 kgReference

18743 kgReference

HD20 Serial Numbers

1951

—

3001Reference

1952

—

3828Reference

1953

—

4923Reference

1954

—

5737Reference

Allis Chalmers HD20 Tracks

Length on ground

—

270 cmReference

Area on ground

—

3.3 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.