Compare/Allis Chalmers 720 vs Allis Chalmers 818GT

Allis Chalmers 720 vs Allis Chalmers 818GT

Verdict: Allis Chalmers 720 vs Allis Chalmers 818GT

The Allis Chalmers 720 and the Allis Chalmers 818GT are both lawn tractors — here is how they stack up on the figures that matter. Allis Chalmers 720 leads on rated power with 20 hp against 18 hp. Allis Chalmers 818GT is the lighter machine (195 kg vs 1,235 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers 818GT is the newer design (1979 vs 1975). In short: choose the Allis Chalmers 720 for outright pulling power, or the Allis Chalmers 818GT 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

Best match

Clear

Rated power

20 hp

18 hp

Confidence

40%

Guide price

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Overview

Distributor

Allis ChalmersReference

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Manufacturer

SundstrandReference

Allis ChalmersReference

With 29x12.00-15 R3 tires.Reference

Image courtesy of Kyle TaylorReference

Final drives

spur gearReference

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Variants

9020

similar Simplicity modelReference

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720 Special

economy model with no 3-point or rear PTOReference

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Engine

Displacement

49.8 ciReference

42.33 ciReference

Bore/Stroke

83 x 76 mmReference

87 x 58 mmReference

Power (gross)

14.5 kWReference

13.4 kWReference

Air cleaner

paper elementReference

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Compression

7:1Reference

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Rated RPM

3600Reference

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Starter volts

12Reference

Oil capacity

5.7 LReference

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Fuel tank

—

8.3 LReference

Starter

—

electricReference

Transmission

Gears

infinite forward and reverse (3-range)Reference

3 forward and 1 reverseReference

Capacities

Fuel

14.4 LReference

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PTO & Hydraulics

Hydraulic system

5.7 LReference

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Type

hydrostaticReference

belt-driven gearReference

Capacity

5.7 LReference

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Pressure

34.5 barReference

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Pump flow

9.5 lpmReference

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Rear Type

0Reference

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Rear PTO

independentReference

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Clutch

electricReference

mechanical idler pulleyReference

Rear PTO Type

2000Reference

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Front PTO

independentReference

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Front PTO Type

3600Reference

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Mid PTO

—

independentReference

Dimensions

Wheelbase

142 cmReference

122 cmReference

Weight

419 kgReference

195 kgReference

Front tire

20x8.00-10Reference

15x6.00-6Reference

Rear tire

29x12.00-15Reference

20x10.00-10Reference

Ag front

4.00x12Reference

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Ag rear

8.00-16Reference

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Lawn/turf front

6.90/6.00-9Reference

15x6.00-6Reference

Lawn/turf rear

31x15.50-15Reference

20x10.00-10Reference

Length

210 cmReference

168 cmReference

Width

121 cmReference

90 cmReference

Height

109 cmReference

—

Ground clearance

38 cmReference

—

Shipping

589 kgReference

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Operating

671 kgReference

—

Height (steering wheel)

—

101 cmReference

Height (hood)

—

87 cmReference

Allis Chalmers 720 attachments

720 Serial Number Location

Electrical

Ground

negativeReference

Charging system

flywheel magnetoReference

—

Charging amps

20Reference

3Reference

Battery volts

12Reference

Battery AH

53Reference

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Attachment overview

60" Mower deck

Cutting width

152 cmReference

—

Brantly LD6 Backhoe

Backhoe type

Brantly LD6 BackhoeReference

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Transport height

182 cmReference

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Bucket width

40 cmReference

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2-Foot flat digging depth

182 cmReference

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Reach from pivot

274 cmReference

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Swing Arc

135°Reference

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Bucket force

1360 kgReference

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Dipperstick force

707 kgReference

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Speeds

Allis Chalmers 818GT attachments

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.