Rare Allis Chalmers 25-40 Thresherman Special and The Gray cold start
Video by Past Preserver
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Years in Production / 1930–1936
Allis-Chalmers
25-40
Explore the specifications, hardware, and original references for the Allis-Chalmers 25-40.
44hp
Engine estimate · from belt
2WD Only
Drive
1930–1936
Production years
Allis-Chalmers
Manufacturer
25-40 / 01
At a glance
Production
Standard-tread tractor
Built in West Allis, Wisconsin, USA
- Manufacturer
- Allis Chalmers
- Total Built
- 1,426
Mechanical
Two-wheel drive
Manual steering
Open operator station.
25-40 / 02
Under the hood
Engine Detail (Option 1)
Allis Chalmers
gasoline
4-cylinder
liquid-cooled vertical I-head
- Displacement
- 510.5 ci8.4 L
- Bore Stroke
- 5.00x6.50 inches127 x 165 mm
- Rated Rpm
- 1000
- Coolant Capacity
- 40 qts37.9 L
- Fuel Type
- gasoline
- Cylinders
- 4
- Cooling
- liquid-cooled vertical I-head
Engine Detail (Option 2)
Allis Chalmers
4-cylinder
liquid-cooled
- Displacement
- 563 ci9.2 L
- Bore Stroke
- 5.25x6.50 inches133 x 165 mm
- Cylinders
- 4
- Cooling
- liquid-cooled
Engine Options
Allis Chalmers 8.4L 4-cyl gasoline
Allis Chalmers 9.2L 4-cyl
- Fuel Tank
- 30 gal113.6 L
- Aux Fuel
- 1 gal3.8 L
25-40 / 03
Gears & controls
Transmission
- Transmission Type
- gear
- Gears
- 2 forward and 1 reverse
25-40 / 04
Size. Stance. Footprint.
Dimensions And Tires
- Weight
- 7000 lbs3175 kg
- Front Tire
- 36x6
- Rear Tire
- 50x12
Tires And Tracks
- Front Ag
- 36x6 steel
- Rear Ag
- 50x12 steel
25-40 / 05
Tractor Photos
See it in action
Videos
Watch Allis-Chalmers 25-40 videos from their original YouTube creators.
25-40 / 07
Tests (NTTL)
Nebraska Tractor Test 193
Distillate 2-speed 2WDJune 18 - 25, 1931
Drawbar performance
Gear 1 used for power test.
Gear 1 used for pull test.
- Id
- 193
- Belt Power Max
- 47.00 hp35.0 kW
- Belt Fuel Use Max
- 5.5 gal/hour20.8 l/hour
- Max Power
- 33.82 hp25.2 kW
- Max Pull
- 4,133 lbs1874 kg