Compare/Allis Chalmers 4W-305 vs Allis Chalmers 7580

Allis Chalmers 4W-305 vs Allis Chalmers 7580

Verdict: Allis Chalmers 4W-305 vs Allis Chalmers 7580

The Allis Chalmers 4W-305 and the Allis Chalmers 7580 are both tractors — here is how they stack up on the figures that matter. Allis Chalmers 4W-305 leads on rated power with 250 hp against 186 hp. Allis Chalmers 4W-305 is the lighter machine (12,292 kg vs 23,100 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers 4W-305 holds more fuel (757.0 L vs 643.5 L) for longer stints between fills. Allis Chalmers 4W-305 is the newer design (1982 vs 1976). In short: choose the Allis Chalmers 4W-305 for outright pulling power, or the Allis Chalmers 7580 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Allis Chalmers

Fit score

Clear

Allis Chalmers

Fit score

Best match

Clear

Rated power

250 hp

186 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Allis ChalmersReference

With 20.8x38 tires.Reference

With 20.8x38 rear tires.Reference

Original price

$93,685Reference

$63,084Reference

Final drives

planetaryReference

—

Total built

—

1610Reference

Steering

—

hydrostatic powerReference

Engine

Fuel tank

757.0 LReference

643.5 LReference

Engine

227.4 kWReference

—

Displacement

12.0 LReference

7.0 LReference

Bore/Stroke

133 x 143 mmReference

108 x 127 mmReference

Power

227.4 kWReference

—

Air cleaner

dryReference

Compression

16.25:1Reference

16:1Reference

Rated RPM

2300Reference

2550Reference

Idle RPM

950-2580Reference

775-2750Reference

Starter volts

12Reference

Oil capacity

56.8 LReference

23.7 LReference

Coolant capacity

68.1 LReference

36.0 LReference

Drawbar (claimed)

—

114.1 kWReference

Drawbar (tested)

—

114.6 kWReference

Firing order

—

1-5-3-6-2-4Reference

Power at rated engine speed

—

139.0 kWReference

Max power

—

114.6 kWReference

Transmission

Power DirectorReference

Gears

20 forward and 4 reverseReference

PTO & Hydraulics

PTO (claimed)

186.4 kWReference

138.7 kWReference

Type

two-speed power shiftReference

partial power shiftReference

Valves

3Reference

3 to 4Reference

SCV flow

79.5 lpmReference

—

Total flow

348.2 lpmReference

283.5 lpmReference

Rear Type

IV/IIIReference

IIIReference

Rear PTO

independentReference

Rear PTO Type

1000 (1.75)Reference

1000Reference

PTO (tested)

—

139.0 kWReference

Pump flow

—

87.1 lpmReference

Dimensions

Wheelbase

320 cmReference

Weight

12292 kgReference

23100 to 23510 poundsReference

Front tire

18.4x38Reference

20.8x38Reference

Rear tire

18.4x38Reference

20.8x38Reference

Ag front

20.8x38Reference

18.4x38Reference

Ag rear

20.8x38Reference

18.4x38Reference

Length

723 cmReference

571 cmReference

Height (hood)

246 cmReference

216 cmReference

Height (cab)

353 cmReference

—

Shipping weight

12292 kgReference

—

Clearance (front axle)

65 cmReference

—

Clearance (rear axle)

75 cmReference

—

Front axle

3035 mmReference

—

Rear axle

3035 mmReference

—

Width

—

303 cmReference

Height (exhaust)

—

381 cmReference

Ground clearance

—

43 cmReference

Front tread

—

157 to 312 cmReference

Rear tread

—

157 to 312 cmReference

Shipping

—

10478 kgReference

Operating

—

10664 kgReference

Ballasted

—

11340 kgReference

4W-305 Serial Numbers

1982

1001Reference

—

1983

1112Reference

—

1984

1176Reference

—

Location:

Front frame, on rear left sideReference

Front frame, rear left sideReference

Electrical

Ground

negativeReference

—

Charging system

alternatorReference

Battery volts

12Reference

Batteries

—

4Reference

Speeds

7580 Serial Numbers

1976

—

1001Reference

1977

—

1288Reference

1978

—

1605Reference

1979

—

2218Reference

1980

—

2486Reference

1981

—

2717Reference

Final

—

3018Reference

Test results

Fuel use

—

47.7 l/hourReference

Max pull

—

10573 kgReference

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.