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Allis Chalmers 7040 vs Allis Chalmers 8030
Verdict: Allis Chalmers 7040 vs Allis Chalmers 8030
The Allis Chalmers 7040 and the Allis Chalmers 8030 are both tractors — here is how they stack up on the figures that matter. Allis Chalmers 7040 leads on rated power with 136 hp against 134 hp. Allis Chalmers 7040 is the lighter machine (5,307 kg vs 14,200 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers 8030 is the newer design (1982 vs 1975). In short: choose the Allis Chalmers 7040 for outright pulling power, or the Allis Chalmers 8030 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
136 hp
134 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
Allis ChalmersReference
Allis ChalmersReference
Six gears in two ranges (slow/fast). Clutchless power shift between gears.Reference
Six power shift gears (1-6) in two ranges (slow/fast). Clutch must be used to shift range. Pressing the clutch pedal half-way automatically downshifts from 5th/6th to 4th gear.Reference
Original price
$24,550Reference
$52,398Reference
Differential lock
power standardReference
electro-hydraulic rearReference
Steering
hydrostatic powerReference
hydrostatic powerReference
Total built
—
2,328Reference
Engine
Drawbar (claimed)
87.2 kWReference
—
Drawbar (tested)
85.3 kWReference
85.9 kWReference
Displacement
7.0 LReference
7.0 LReference
Bore/Stroke
108 x 127 mmReference
108 x 127 mmReference
Pre-heating
coolant heater (optional)Reference
—
Compression
16:1Reference
15.5:1Reference
Rated RPM
2300Reference
2300Reference
Starter volts
12Reference
12Reference
Oil capacity
18.0 LReference
28.0 LReference
Coolant capacity
29.3 LReference
29.3 LReference
Power at rated engine speed
101.6 kWReference
99.7 kWReference
Max power
85.3 kWReference
85.9 kWReference
Air cleaner
—
dryReference
Transmission
Transmission
Power ShiftReference
Power ShiftReference
Gears
12 forward and 2 reverseReference
12 forward and 2 reverseReference
PTO & Hydraulics
PTO (claimed)
101.4 kWReference
—
PTO (tested)
101.8 kWReference
99.7 kWReference
Hydraulic system
91.2 LReference
—
Type
partial power shiftReference
Allis-ChalmersReference
Capacity
91.2 LReference
—
Valves
2 or 3Reference
2 or 3Reference
Pump flow
83.3 lpmReference
51.1 lpmReference
Total flow
170.3 lpmReference
170.3 lpmReference
Rear Type
III/IIReference
III/IIReference
Rear PTO
independentReference
independentReference
Rear PTO Type
1000 (optional)Reference
540/1000Reference
Power at rated PTO speed
101.5 kWReference
100.2 kWReference
Steering flow
—
36.0 lpmReference
Rear lift (at 24"/610mm)
—
3719 kgReference
Capacities
Fuel
49.2 LReference
94.6 LReference
Rear diff.
—
63.2 LReference
Dimensions
Wheelbase
269 cmReference
—
Weight
5307 kgReference
14200 to 15015 poundsReference
Front tire
11.00-16Reference
10.00-16Reference
Rear tire
18.4-38Reference
18.4-38Reference
Ag front
14L-16.1Reference
—
Ag rear
16.9-38Reference
16.9-38Reference
Length
440 cmReference
474 cmReference
Width
303 cmReference
237 cmReference
Operating weight
5307 kgReference
—
Ballasted weight
7883 kgReference
—
Clearance (front axle)
56 cmReference
—
Clearance (rear axle)
71 cmReference
—
Front tread
157 to 223 cmReference
—
Rear tread
162 to 231 cmReference
—
Steering wheel
220 cmReference
—
2WD Wheelbase
—
269 cmReference
4WD Wheelbase
—
243 cmReference
2WD Ag front
—
18.4-16Reference
4WD Ag front
—
14.9-24Reference
Ground clearance
—
71 cmReference
4WD Shipping
—
6441 kgReference
Operating
—
6810 kgReference
Ballasted
—
7756 kgReference
Allis Chalmers 7040 attachments
7040 Serial Numbers
1975
1303Reference
—
1976
4089Reference
—
1977
6839Reference
—
Location:
Above PTO shieldReference
—
Electrical
Charging system
alternatorReference
alternatorReference
Battery volts
12Reference
12Reference
Charging amps
—
100Reference
Allis Chalmers 7040 Height
Hood
172 cmReference
175 cmReference
Exhaust
294 cmReference
287 cmReference
Test results
Fuel use
33.7 l/hourReference
33.3 l/hourReference
Max pull
6144 kgReference
6054 kgReference
Speeds
Variants
8030
—
row-cropReference
8030HC
—
high-cropReference
8030 Serial Number Location
8030 Serial Numbers
1981
—
1001Reference
1982
—
1009Reference
1983
—
2093Reference
1984
—
2701Reference
1985
—
3146Reference
Final
—
3328Reference
Allis Chalmers 8030 Height
Cab
—
292 cmReference
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.