Compare/International Harvester 660 vs International Harvester Hydro 85

International Harvester 660 vs International Harvester Hydro 85

Verdict: International Harvester 660 vs International Harvester Hydro 85

The International Harvester 660 and the International Harvester Hydro 85 are both tractors — here is how they stack up on the figures that matter. International Harvester Hydro 85 leads on rated power with 80 hp against 79 hp. International Harvester 660 holds more fuel (124.9 L vs 112.0 L) for longer stints between fills. International Harvester Hydro 85 is the newer design (1981 vs 1959). In short: choose the International Harvester Hydro 85 for outright pulling power, or the International Harvester 660 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

International Harvester

Fit score

Best match

Clear

International Harvester

Fit score

Best match

Clear

Rated power

79 hp

80 hp

Confidence

40%

Guide price

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Overview

Manufacturer

International HarvesterReference

The Torque Amplifier (TA) provides a clutchless shift-on-the-move between direct drive (DD) and the lower TA speed.Reference

liquid-cooledReference

Total built

6,945Reference

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Original price

$6,000 (1963)Reference

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Steering

hydrostatic power optionalReference

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Differential lock

—

mechanical rearReference

Engine

Fuel tank

141.9 LReference

112.0 LReference

Engine

70.8 kWReference

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Plows

6Reference

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Drawbar (tested)

52.4 kWReference

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Displacement

4.6 LReference

4.0 LReference

Bore/Stroke

94 x 112 mmReference

100 x 129 mmReference

Power

70.8 kWReference

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Air cleaner

oil bathReference

—

Compression

8.75:1Reference

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Rated RPM

2400Reference

2300Reference

Torque

287.5 NmReference

263.1 NmReference

Torque RPM

1200Reference

1600Reference

Oil capacity

60.6 LReference

—

Coolant capacity

19.9 LReference

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Firing order

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

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Power at rated engine speed

60.1 kWReference

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Max power

51.9 kWReference

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Engine (gross)

—

59.7 kWReference

Engine (net)

—

57.7 kWReference

Power (net)

—

57.7 kWReference

Power (gross)

—

59.7 kWReference

Fuel system

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indirect injectionReference

Starter

—

electricReference

Starter volts

—

12Reference

Transmission

Torque AmplifierReference

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Gears

10 forward and 2 reverseReference

infinite forward and reverseReference

Type

—

hydrostaticReference

PTO & Hydraulics

PTO (tested)

60.7 kWReference

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Valves

1Reference

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Total flow

64.3 lpmReference

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Steering flow

9.5 lpmReference

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Rear PTO

independentReference

Rear PTO Type

540Reference

540/1000Reference

PTO (claimed)

—

50.9 kWReference

Pump flow

—

46.9 lpmReference

Rear Type

—

IIReference

Control

—

position and draft controlReference

Rear lift

—

2381 kgReference

Clutch

—

hydraulic wet discReference

Dimensions

Wheelbase

217 cmReference

224 cmReference

Weight

9635 to 9875 poundsReference

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Front tire

7.50-18Reference

10.00-16Reference

Rear tire

18.4/15-34Reference

16.9-34Reference

Ag front

7.50-18Reference

12.4-24 (MFWD)Reference

Ag rear

18.4/15-34Reference

16.9-34Reference

Industrial rear

16.9/14-34Reference

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Length

362 cmReference

374 cmReference

Width

198 cmReference

—

Height (steering wheel)

187 cmReference

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Ground clearance

50 cmReference

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Clearance (front axle)

44 cmReference

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Operating

4479 kgReference

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Ballasted

6919 kgReference

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International Harvester 660 attachments

660 Serial Number Location

660 Serial Numbers

1959

501Reference

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1960

3398Reference

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1961

4259Reference

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1962

5883Reference

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1963

6995Reference

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Final

?Reference

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Test results

Fuel use

33.3 l/hourReference

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Max pull

5010 kgReference

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Speeds

Hydro 85 Serial Numbers

Location:

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Serial number plate on right front of tractor frame, above the front axle.Reference

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.