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Allis Chalmers I40 vs Allis Chalmers IB
Verdict: Allis Chalmers I40 vs Allis Chalmers IB
The Allis Chalmers I40 and the Allis Chalmers IB are both industrial tractors — here is how they stack up on the figures that matter. Allis Chalmers I40 leads on rated power with 41 hp against 23 hp. Allis Chalmers I40 is the newer design (1964 vs 1939). In short: choose the Allis Chalmers I40 for outright pulling power, or the Allis Chalmers IB 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
41 hp
23 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
Allis ChalmersReference
Allis ChalmersReference
With 14.9x24 rear tires.Reference
Second engine, used until 1943, SN 64500Reference
Final drives
bull gearReference
—
Total built
—
2,850Reference
Steering
—
manualReference
Variants
D10
ag tractorReference
—
B
—
farm tractorReference
Engine
Fuel tank
47.3 LReference
—
Engine (gross)
30.3 kWReference
—
Displacement
2.4 LReference
1.9 LReference
Bore/Stroke
89 x 98 mmReference
83 x 89 mmReference
Power (gross)
30.3 kWReference
—
Compression
7.5:1Reference
5.75:1Reference
Rated RPM
2000Reference
1400Reference
Torque
183.1 NmReference
—
Torque RPM
1200Reference
—
Firing order
1-2-4-3Reference
1-2-4-3Reference
Starter volts
12Reference
6Reference
Oil capacity
7.6 LReference
5.7 LReference
Belt (claimed)
—
17.1 kWReference
Air cleaner
—
oil bathReference
Sparkplug gap
—
0.762 mmReference
Point gap
—
0.508 mmReference
Intake valve clearance
—
0.254 mmReference
Exhaust valve clearance
—
0.254 mmReference
Coolant capacity
—
7.6 LReference
Transmission
Gears
8 forward and 2 reverseReference
3 forward and 1 reverseReference
Clutch
228.6mm dry discReference
dryReference
Transmission
Dual RangeReference
—
Oil type
—
[0oC]Reference
32oF [0oC]↑
—
: SAE140Reference
32oF [0oC]↓
—
: SAE90Reference
PTO & Hydraulics
Type
shuttleReference
non-synchronized gearReference
Pressure
137.9 barReference
—
Total flow
64.3 lpmReference
—
Rear Type
IReference
—
Control
position and draft controlReference
—
Rear PTO
independentReference
—
Rear PTO Type
540 (1.375)Reference
—
Engine RPM
540@1650Reference
—
Dimensions
Wheelbase
200 cmReference
—
Weight
3980 to 7400 poundsReference
—
Front tire
7.50x16Reference
—
Rear tire
14.9x24Reference
—
Lawn/turf rear
12.4x24Reference
—
Industrial front
7.50x16Reference
—
Industrial rear
14.9x24Reference
—
Length
301 cmReference
—
Height (steering wheel)
154 cmReference
—
Height (hood)
139 cmReference
—
Ground clearance
50 cmReference
—
Front tread
137/143 cmReference
—
Rear tread
127/154 cmReference
—
Allis Chalmers I40 attachments
Attachment overview
Allis-Chalmers Backhoe
Backhoe type
Allis-Chalmers BackhoeReference
—
Transport height
320 cmReference
—
Bucket width
91 cmReference
—
Digging depth
309 cmReference
—
2-Foot flat digging depth
304 cmReference
—
Reach from pivot
426 cmReference
—
Bucket force
2494 kgReference
—
Speeds
IB Serial Numbers
1938
—
97Reference
1939
—
11800Reference
1940
—
33502Reference
1941
—
49721Reference
1942
—
56782Reference
1943
—
64501Reference
1944
—
65502Reference
1945
—
70210Reference
1946
—
IB1001Reference
1947
—
IB1003Reference
1948
—
IB1010Reference
1949
—
IB1282Reference
1950
—
IB1556Reference
1951
—
IB1879Reference
1952
—
IB2219Reference
1953
—
IB2570Reference
Location:
—
Serial number stamped behind the gear shift lever, on top of the transmission case.Reference
Electrical
Charging system
—
generatorReference
Battery volts
—
6Reference
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.