Allis Chalmers HD20

Last Updated: September 2024

Overview

The Allis Chalmers HD20 is a powerful tractor built for heavy-duty work. It has a big diesel engine made by General Motors with 6 cylinders. The engine is liquid-cooled and has a blower to help it run better. It can hold 60 quarts of coolant to keep it from getting too hot.

This tractor is big and strong. It's 191 inches long and 95 inches tall. The HD20 weighs a lot - 41,000 pounds! It has a special transmission called a torque converter with 2 forward gears and 1 reverse gear. The tractor uses a 24-volt electrical system to start up and run its parts.

The HD20 is made to work hard in tough conditions. Its engine is built to last, with a compression ratio of 18.0:1. While we don't know exactly how much power it has, its size and weight show it's meant for big jobs. Farmers and construction workers who need a strong, reliable tractor might find the Allis Chalmers HD20 a good choice for their work.
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Key Specifications

Transmission: Torque converter

Operating Weight: 41000 lb (18597 kg)

Fuel Type: Diesel

Image Gallery

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Allis Chalmers HD20 vs. Similar Tractors

Operating Weight

The Operating Weight for the Allis Chalmers HD20 is Excellent. It is greater than 98% of similar Utility tractors in our database.

Operating weight distribution of Utility tractors

(across 6.4K+ tractors in our database)

Engine Displacement

The Engine Displacement for the Allis Chalmers HD20 is Excellent. It is greater than 96% of similar Utility tractors in our database.

Engine displacement distribution of Utility tractors

(across 1K+ tractors in our database)

Engine Rated RPM

The Engine Rated RPM for the Allis Chalmers HD20 is Poor. It is greater than 6% of similar Utility tractors in our database.

Engine rated RPM distribution of Utility tractors

(across 1K+ tractors in our database)

Technical Specifications

Engine

Manufacturer
General Motors
Cooling Type
Liquid-cooled
Cylinder Orientation
Vertical
Valve Configuration
I-head
Fuel Type
Diesel
Induction Type
Blower
Cylinders
6
Displacement
660 ci (10.8 L)
Bore
5.00 in (127.0 mm)
Stroke
5.60 in (142.2 mm)
Rated RPM
1700

Transmission

Type
Torque converter
Forward Gears
2
Reverse Gears
1

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