Allis Chalmers UC Production ended · 2WD
31 hp
Lineage This model UC 1933–1941 · 31 hp
Successor → no record
Power specifications Engine no record PTO no record Drawbar 19 hp claimed Drawbar, tested 21.1 hp Belt pulley 31 hp claimed Belt pulley, tested 34.1 hp Listed power 34 hp belt basis Plows rated 3
Engines fitted to the Allis Chalmers UC Allis-Chalmers 4.9L 4-cyl gasolineGasoline · 4 cyl 301 ci Allis-Chalmers 5.2L 4-cyl gasolineGasoline · 4 cyl 318 ci
Engine details Allis-Chalmers 4.9L 4-cyl gasoline Bore × stroke 4.38 in × 5 in Rated speed 1,200 rpm Notes vertical I-head. The 301 Allis engine replaced was the second engine on the All-Crop / UC. It was used from 1933 until 1936; tractor serial numbers UC1369 though UC2281 Allis-Chalmers 5.2L 4-cyl gasoline Bore × stroke 4.5 in × 5 in Rated speed 1,200 rpm Cooling liquid-cooled vertical I-head Notes The 318 Allis was the final engine, introduced in 1936 on tractor serial number UC2282 Transmissions for the Allis Chalmers UC 3-speed non-synchronized gearnon-synchronized gear 3F / 1R 4-speed non-synchronized gearnon-synchronized gear 4F / 1R
Weight specifications Weight 5,815 lb unspecified
Dimensions specifications Wheelbase 87 in Length 145 in Width 81 in Height 69.5 in
Capacities specifications Fuel tank 24 gal Auxiliary fuel 1 gal
Hydraulics specifications Pump flow no record
Hitch specifications Rear lift capacity no record
Chassis specifications Drive 2WD Cab Open operator station
Tires specifications Front 24x5 Rear 42x2
Production specifications Factories West Allis, Wisconsin, USA Built by Allis Chalmers
Data from TractorData.com , last updated there 2 December 2025; collected 6 October 2026. See sources and attribution .
No records for: pto, tracks, electrical.
The Allis-Chalmers model UC was originally named the All-Crop.