Compare/Allis Chalmers 7080 vs Allis Chalmers 8550

Allis Chalmers 7080 vs Allis Chalmers 8550

Verdict: Allis Chalmers 7080 vs Allis Chalmers 8550

The Allis Chalmers 7080 and the Allis Chalmers 8550 are both tractors — here is how they stack up on the figures that matter. Allis Chalmers 8550 leads on rated power with 254 hp against 182 hp. Allis Chalmers 7080 is the lighter machine (6,186 kg vs 26,400 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers 8550 holds more fuel (643.5 L vs 242.2 L) for longer stints between fills. Allis Chalmers 8550 is the newer design (1978 vs 1975). In short: choose the Allis Chalmers 8550 for outright pulling power, or the Allis Chalmers 7080 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Allis Chalmers

Fit score

Best match

Clear

Allis Chalmers

Fit score

Clear

Rated power

182 hp

254 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Allis ChalmersReference

With 20.8x38 rear tires.Reference

Allis 8550 speeds with 18.4x38 tires.Reference

Original price

$54,561Reference

$86,753Reference

Final drives

inboard planetaryReference

—

Steering

—

hydrostatic powerReference

Engine

Fuel tank

242.2 LReference

643.5 LReference

Engine

156.6 kWReference

223.7 kWReference

Drawbar (claimed)

114.8 kWReference

156.6 kWReference

Drawbar (tested)

111.0 kWReference

162.5 kWReference

Displacement

7.0 LReference

12.0 LReference

Bore/Stroke

108 x 127 mmReference

133 x 159 mmReference

Power

156.6 kWReference

223.7 kWReference

Air cleaner

dry with pre-cleanerReference

dryReference

Compression

16:1Reference

16.25:1Reference

Rated RPM

2550Reference

2500Reference

Starter volts

12Reference

Oil capacity

28.0 LReference

56.8 LReference

Coolant capacity

34.1 LReference

68.1 LReference

Power at rated engine speed

135.4 kWReference

189.3 kWReference

Max power

111.0 kWReference

162.5 kWReference

Idle RPM

—

775-2800Reference

Firing order

—

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

Intake valve clearance

—

0.381 mmReference

Exhaust valve clearance

—

0.508 mmReference

Transmission

Allis-Chalmers Power DirectorReference

Power DirectorReference

Gears

20 forward and 4 reverseReference

PTO & Hydraulics

PTO (claimed)

135.3 kWReference

186.4 kWReference

PTO (tested)

135.4 kWReference

189.3 kWReference

Type

partial power shiftReference

Valves

2 or 3Reference

3 or 4Reference

Pump flow

87.1 lpmReference

283.5 lpmReference

Total flow

177.9 lpmReference

—

Steering flow

37.9 lpmReference

—

Rear Type

3/2Reference

IV/IIIReference

Rear lift (at 24"/610mm)

3030 kgReference

—

Rear PTO

independentReference

Rear PTO Type

1000Reference

Dimensions

Wheelbase

269 cmReference

320 cmReference

Weight

6186 kgReference

26400 to 27040 poundsReference

Front tire

14Lx16Reference

18.4x38Reference

Rear tire

20.8x38Reference

18.4x38Reference

Ag front

18.4x16Reference

30.5x32Reference

Ag rear

18.4x42Reference

30.5x32Reference

Length

414 cmReference

723 cmReference

Width

303 cmReference

Ground clearance

73 cmReference

43 cmReference

Rear axle

101 mmReference

—

Steering wheel

223 cmReference

—

Front tread

—

157 to 312 cmReference

Rear tread

—

157 to 312 cmReference

Shipping

—

11975 kgReference

Operating

—

12265 kgReference

Ballasted

—

13317 kgReference

Allis Chalmers 7080 attachments

7080 Serial Numbers

1975

1007Reference

—

1976

1572Reference

—

1977

2501Reference

—

1978

3001Reference

1083Reference

1979

3268Reference

1342Reference

1980

3648Reference

1553Reference

1981

3954Reference

1723Reference

Location:

Above PTO shieldReference

Front frame, rear left sideReference

Allis Chalmers 7080 Height

Hood

175 cmReference

229 cmReference

Exhaust

297 cmReference

391 cmReference

Test results

Fuel use

42.8 l/hourReference

66.2 l/hourReference

Max pull

8381 kgReference

11893 kgReference

Speeds

8550 Serial Numbers

Electrical

Ground

—

negativeReference

Charging system

—

alternatorReference

Batteries

—

4Reference

Battery volts

—

12Reference

Allis Chalmers 8550 Height

Cab

—

353 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.