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Years in Production / 1951–1954
Allis-Chalmers
HD20
Explore the specifications, hardware, and original references for the Allis-Chalmers HD20.
No photo
175hp
Source index power
Tracks
Drive
1951–1954
Production years
Allis-Chalmers
Manufacturer
HD20 / 01
At a glance
Production
Agricultural Crawler tractor
Built in Springfield, Illinois, USA
- Manufacturer
- Allis Chalmers
- Total Built
- 3,100
Mechanical
Open operator station.
- Drive
- crawler
HD20 / 02
Under the hood
Engine Detail
General Motors
blower diesel
6-cylinder
liquid-cooled 2-cycle vertical I-head
- Displacement
- 660 ci10.8 L
- Bore Stroke
- 5.00x5.60 inches127 x 142 mm
- Power Net
- 175 hp130.5 kW
- Compression Ratio
- 18.0:1
- Rated Rpm
- 1700
- Starter Volts
- 24
- Coolant Capacity
- 60 qts56.8 L
- Cylinders
- 6
- Cooling
- liquid-cooled 2-cycle vertical I-head
Engine Options
General Motors 10.8L 6-cyl diesel
- Fuel Tank
- 120 gal454.2 L
HD20 / 03
Gears & controls
Transmission
- Transmission Type
- torque converter
- Gears
- 2 forward and 1 reverse
HD20 / 04
Size. Stance. Footprint.
Tires And Tracks
24-inch tracks
- Weight
- 41000 lbs18597 kg
Tires And Tracks
- Width
- 24 inches60 cm
- Length On Ground
- 106.6 inches270 cm
- Area On Ground
- 5118 in²3.3 m²
- Ground Pressure
- 8.01 psi0.6 bar
See it in action
Videos
Watch Allis-Chalmers HD20 videos from their original YouTube creators.
HD20 / 06
Tests (NTTL)
Nebraska Tractor Test 465Nebraska test report ↗
Diesel 2-speed crawlerJuly 20 - August 3, 1951
Drawbar performance
- Id
- 465
- Max Power
- 116.7 hp87.0 kW
- Max Pull
- 41321 lbs18743 kg