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Allis Chalmers IB vs Allis Chalmers WC Speed Maintainer
Verdict: Allis Chalmers IB vs Allis Chalmers WC Speed Maintainer
The Allis Chalmers IB and the Allis Chalmers WC Speed Maintainer are both industrial tractors — here is how they stack up on the figures that matter. Allis Chalmers IB is the newer design (1939 vs 1938). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.
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Fit & specs
Allis Chalmers
62
Fit score
Clear
Allis Chalmers
79
Fit score
Best match
Clear
Rated power
23 hp
null hp
Confidence
40%
40%
Guide price
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Overview
Manufacturer
Allis ChalmersReference
Allis ChalmersReference
Second engine, used until 1943, SN 64500Reference
liquid-cooledReference
Total built
2,850Reference
411Reference
Steering
manualReference
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Variants
B
farm tractorReference
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WC
—
farm tractorReference
Engine
Belt (claimed)
17.1 kWReference
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Displacement
1.9 LReference
3.3 LReference
Bore/Stroke
83 x 89 mmReference
102 x 102 mmReference
Air cleaner
oil bathReference
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Compression
5.75:1Reference
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Rated RPM
1400Reference
1300Reference
Firing order
1-2-4-3Reference
1-2-4-3Reference
Starter volts
6Reference
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Oil capacity
5.7 LReference
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Sparkplug gap
0.762 mmReference
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Point gap
0.508 mmReference
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Intake valve clearance
0.254 mmReference
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Exhaust valve clearance
0.254 mmReference
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Coolant capacity
7.6 LReference
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Transmission
Type
non-synchronized gearReference
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Gears
3 forward and 1 reverseReference
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Clutch
dryReference
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Oil type
[0oC]Reference
—
32oF [0oC]↑
: SAE140Reference
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32oF [0oC]↓
: SAE90Reference
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IB Serial Numbers
1938
97Reference
IC1Reference
1939
11800Reference
IC151Reference
1940
33502Reference
IC401Reference
1941
49721Reference
IC408Reference
1942
56782Reference
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1943
64501Reference
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1944
65502Reference
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1945
70210Reference
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1946
IB1001Reference
—
1947
IB1003Reference
—
1948
IB1010Reference
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1949
IB1282Reference
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1950
IB1556Reference
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1951
IB1879Reference
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1952
IB2219Reference
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1953
IB2570Reference
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Location:
Serial number stamped behind the gear shift lever, on top of the transmission case.Reference
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Electrical
Charging system
generatorReference
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Battery volts
6Reference
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WC Speed Maintainer Serial Numbers
Final
—
IC411Reference
Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.