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Allis Chalmers B vs Allis Chalmers C
Verdict: Allis Chalmers B vs Allis Chalmers C
The Allis Chalmers B and the Allis Chalmers C are both tractors — here is how they stack up on the figures that matter. Allis Chalmers B leads on rated power with 20 hp against 19 hp. Allis Chalmers B is the lighter machine (934 kg vs 1,134 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers C holds more fuel (49.2 L vs 45.4 L) for longer stints between fills. Allis Chalmers C is the newer design (1940 vs 1938). In short: choose the Allis Chalmers B for outright pulling power, or the Allis Chalmers C if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.
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Fit & specs
Allis Chalmers
62
Fit score
Best match
Clear
Allis Chalmers
62
Fit score
Best match
Clear
Rated power
20 hp
19 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
Allis ChalmersReference
Allis ChalmersReference
Gear 1 used for pull test.Reference
Gasoline 3-speed 2WDOctober 28 - November 7, 1940Link: Nebraska Tractor Test 364 fileReference
Factories
Southampton, EnglandReference
—
Total built
120,783Reference
84,020Reference
Steering
manualReference
—
Variants
IB
industrial tractorReference
—
Engine
Fuel tank
45.4 LReference
49.2 LReference
Plows
1 (16-inch)Reference
2Reference
Drawbar (tested)
14.5 kWReference
13.7 kWReference
Belt (tested)
16.6 kWReference
—
Displacement
1.9 LReference
2.1 LReference
Bore/Stroke
76 x 102 mmReference
86 x 89 mmReference
Air cleaner
oil bathReference
oil bathReference
Compression
4.92:1Reference
5.75:1Reference
Rated RPM
1400Reference
1500Reference
Firing order
1-2-4-3Reference
1-2-4-3Reference
Starter volts
6Reference
6Reference
Oil capacity
5.7 LReference
6.6 LReference
Sparkplug
AC 45Reference
AC 45Reference
Sparkplug gap
1.016 mmReference
0.889 mmReference
Point gap
0.508 mmReference
0.508 mmReference
Intake valve clearance
0.254 mmReference
0.254 mmReference
Exhaust valve clearance
0.254 mmReference
0.254 mmReference
Coolant capacity
7.6 LReference
7.6 LReference
Belt power (max)
16.6 kWReference
—
Max power
14.5 kWReference
13.7 kWReference
Aux. fuel
—
3.8 LReference
Power at rated engine speed
—
17.4 kWReference
Transmission
Gears
3 forward and 1 reverseReference
3 forward and 1 reverseReference
Clutch
dry discReference
—
Oil type
[0oC]Reference
SAE20WReference
32oF [0oC]↑
: SAE140Reference
—
32oF [0oC]↓
: SAE90Reference
—
PTO & Hydraulics
Type
unsynchronized gearReference
non-synchronized gearReference
Rear PTO
transmissionReference
transmissionReference
Rear PTO Type
560Reference
560Reference
PTO (tested)
—
17.4 kWReference
Dimensions
Wheelbase
186 cmReference
195 cmReference
Weight
934 kgReference
1134 kgReference
Front tire
4.00-15Reference
4.00-15Reference
Rear tire
9-24Reference
9-24Reference
Ag front
4.00-15Reference
6-12Reference
Ag rear
8-38 (Asparagus Special)Reference
10-24Reference
Length
280 cmReference
289 cmReference
Height (exhaust)
194 cmReference
—
Shipping weight
934 kgReference
—
Ballasted weight
1901 kgReference
—
Ground clearance
71 cmReference
—
Front tread
96 to 152 cmReference
208 cmReference
Rear tread
101 to 152 cmReference
132 to 203 cmReference
Height
—
159 cmReference
B Serial Number Location
B Serial Numbers
1938
97Reference
—
1939
11800Reference
—
1940
33502Reference
1Reference
1941
49721Reference
112Reference
1942
56782Reference
12389Reference
1943
64501Reference
18782Reference
1944
65502Reference
23908Reference
1945
70210Reference
30695Reference
1946
1001 (IB)Reference
36378Reference
1947
1003 (IB)Reference
39168Reference
1948
1010 (IB)Reference
51515Reference
1949
1282 (IB)Reference
68281Reference
1950
1556 (IB)Reference
80518Reference
1951
4001 (EB)Reference
—
1952
6861 (EB)Reference
—
1953
9200 (EB)Reference
—
1954
11120 (EB)Reference
—
1955
124711Reference
—
1956
126497Reference
—
1957
127186Reference
—
Final
127461Reference
—
Capacities
Diameter
20 cmReference
20 cmReference
Width
157 cmReference
173 cmReference
RPM
1053Reference
1129Reference
Electrical
Ground
positiveReference
positiveReference
Charging system
generatorReference
generatorReference
Charging amps
12Reference
12Reference
Battery volts
6Reference
6Reference
Battery AH
—
95Reference
Test results
Belt fuel use (max)
7.9 l/hourReference
—
Max pull
1209 kgReference
1066 kgReference
Fuel use
—
7.6 l/hourReference
C Serial Number Location
C Serial Numbers
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.