Compare/Allis Chalmers HD-9G vs Allis Chalmers M7

Allis Chalmers HD-9G vs Allis Chalmers M7

Verdict: Allis Chalmers HD-9G vs Allis Chalmers M7

The Allis Chalmers HD-9G and the Allis Chalmers M7 are both industrial tractors — here is how they stack up on the figures that matter. Allis Chalmers HD-9G leads on rated power with 70 hp against 63 hp. Allis Chalmers M7 is the lighter machine (2,620 kg vs 13,335 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers HD-9G holds more fuel (208.2 L vs 39.7 L) for longer stints between fills. Allis Chalmers HD-9G is the newer design (1951 vs 1944). In short: choose the Allis Chalmers HD-9G for outright pulling power, or the Allis Chalmers M7 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

70 hp

63 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Allis ChalmersReference

liquid-cooled 2-cycle vertical I-headReference

Three gears, plus reverse, with two-speed range shift.Reference

Drive

crawlerReference

half-trackReference

Total built

—

291Reference

Engine

Fuel tank

208.2 LReference

39.7 LReference

Drawbar (claimed)

52.2 kWReference

—

Belt (claimed)

62.6 kWReference

—

Displacement

4.7 LReference

2.2 LReference

Bore/Stroke

108 x 127 mmReference

79 x 111 mmReference

Compression

16.0:1Reference

6.48:1Reference

Rated RPM

1600Reference

4000Reference

Starter volts

12Reference

6Reference

Oil capacity

25.6 LReference

4.7 LReference

Coolant capacity

27.4 LReference

11.4 LReference

Engine

—

47.0 kWReference

Power

—

47.0 kWReference

Fuel system

—

carburetorReference

Pre-heating

—

gasoline-fired boilerReference

Torque

—

142.4 NmReference

Torque RPM

—

2000Reference

Starter

—

electricReference

Transmission

Type

gearReference

Gears

6 forward and 3 reverseReference

6 forward and 2 reverseReference

Transmission

—

WarnerReference

Clutch

—

203.2mm mechanical dry discReference

Dimensions

Weight

13335 kgReference

2620 to 3120 poundsReference

Shipping weight

13335 kgReference

—

Gauge

187 cmReference

—

Wheelbase

—

205 cmReference

Front tire

—

4.00-15Reference

Rear tire

—

70x12Reference

Industrial front

—

4.00-15Reference

Industrial rear

—

70x12 skisReference

Length

—

332 cmReference

Height

—

162 cmReference

Clearance (front axle)

—

34 cmReference

Clearance (drawbar)

—

40 cmReference

Front tread

—

101 cmReference

Rear tread

—

114 cmReference

Shipping

—

1188 kgReference

Operating

—

1415 kgReference

Allis Chalmers HD-9G attachments

HD-9G Serial Numbers

Location:

Steering clutch housing or instrument panelReference

Serial number plate on the right side of the driver's compartment.Reference

Allis Chalmers HD-9G Tracks

Width

50 cmReference

160 cmReference

M7 Serial Numbers

Electrical

Ground

—

negativeReference

Charging system

—

generatorReference

Charging amps

—

40Reference

Battery volts

—

6Reference

Battery AH

—

116Reference

Capacities

Tow capacity

—

1360 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.