The Gray Tractor 20-36 is a tractor with a rating of approximately 20 horsepower, categorising it as a lighter model in its class. Manufactured from 1922 to 1924, it features a 4-cylinder petrol liquid-cooled engine paired with a 2-speed gearbox. The tractor's listed operating weight is 2857 kg, and it is suitable for operations encompassing up to 200 acres.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
20 hp
Weight
2857 kg
Catalogue coverage
Variants represented
2
Richest spec table
33 rows
Recorded power
20 hp
Recorded weight
2857 kg
Transmissions
2-speed gear
Production years
1922-1924
Verified variants
0
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Overview
ManufacturerGray TractorReference
Standard-tread tractorReference
Built in Minneapolis, Minnesota, USAReference
Original price was $1,975 in 1922Reference
Drive3x1 drum driveReference
Manual steeringReference
Open operator station.Reference
Engine
Waukesha 6.5L 4-cyl gasolineReference
Drawbar (claimed)14.9 kWReference
Belt (claimed)26.8 kWReference
Plows4Reference
Waukesha DUReference
gasolineReference
4-cylinderReference
liquid-cooled inlineReference
Displacement6.5 LReference
Bore/Stroke114 x 159 mmReference
Rated RPM1000Reference
Transmission
2-speed gearReference
TypegearReference
Gears2 forward and 1 reverseReference
Dimensions
Wheelbase264 cmReference
Weight2857 kgReference
Front tire40x8Reference
Rear tire54x54Reference
Ag front40x8 steelReference
Ag rear54x54 steelReference
Length441 cmReference
Width205 cmReference
Height160 cmReference
Capacities
Diameter29 cmReference
Width20 cmReference
Speed914.40 meters/minReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.
