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Allis Chalmers 645 vs Allis Chalmers 745B
Verdict: Allis Chalmers 645 vs Allis Chalmers 745B
The Allis Chalmers 645 and the Allis Chalmers 745B are both industrial tractors — here is how they stack up on the figures that matter. Allis Chalmers 745B leads on rated power with 202 hp against 165 hp. Allis Chalmers 745B is the newer design (1973 vs 1965). In short: choose the Allis Chalmers 745B for outright pulling power, or the Allis Chalmers 645 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
85
Fit score
Best match
Clear
Allis Chalmers
85
Fit score
Best match
Clear
Rated power
165 hp
202 hp
Confidence
40%
40%
Guide price
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Overview
Manufacturer
Allis ChalmersReference
Allis ChalmersReference
liquid-cooled inlineReference
liquid-cooled inlineReference
Total built
3012Reference
619Reference
Final drives
planetaryReference
planetaryReference
Engine
Fuel tank
208.2 LReference
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Engine (net)
123.0 kWReference
150.6 kWReference
Displacement
7.0 LReference
8.5 LReference
Bore/Stroke
108 x 127 mmReference
113 x 141 mmReference
Power (net)
123.0 kWReference
150.6 kWReference
Rated RPM
2200Reference
2200Reference
Torque
588.5 NmReference
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Torque RPM
1600Reference
2200Reference
Starter
electricReference
—
Starter volts
24Reference
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Starter type
—
electricReference
Transmission
Type
power shiftReference
power shiftReference
Gears
4 forward and reverseReference
4 forward and reverseReference
PTO & Hydraulics
Pump flow
268.7 lpmReference
359.6 lpmReference
Steering flow
68.1 lpmReference
136.3 lpmReference
Dimensions
Wheelbase
294 cmReference
330 cmReference
Weight
10401 kgReference
—
Front tire
17.5-25Reference
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Rear tire
17.5-25Reference
—
Industrial front
20.5-25Reference
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Industrial rear
20.5-25Reference
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Shipping weight
10401 kgReference
—
Front tread
193 cmReference
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Rear tread
193 cmReference
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Allis Chalmers 645 attachments
Allis Chalmers 745B attachments
Electrical
Charging system
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alternatorReference
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.