Compare/International Harvester 660 vs International Harvester 856XL

International Harvester 660 vs International Harvester 856XL

Verdict: International Harvester 660 vs International Harvester 856XL

The International Harvester 660 and the International Harvester 856XL are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 79 hp. International Harvester 856XL is the lighter machine (8,465 kg vs 9,635 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. International Harvester 856XL is the newer design (1983 vs 1959). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

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Acreage600 acBudgetMain crop / use

Fit & specs

International Harvester

Fit score

Best match

Clear

International Harvester

Fit score

Best match

Clear

Rated power

79 hp

Confidence

40%

Guide price

—

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

Four gears in two ranges, plus reverse range, with two-speed power shift.Reference

Total built

6,945Reference

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Original price

$6,000 (1963)Reference

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Steering

hydrostatic power optionalReference

—

Differential lock

—

mechanical rearReference

Engine

Fuel tank

141.9 LReference

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Engine

70.8 kWReference

63.4 kWReference

Plows

6Reference

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Drawbar (tested)

52.4 kWReference

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Displacement

4.6 LReference

3.9 LReference

Bore/Stroke

94 x 112 mmReference

98 x 129 mmReference

Power

70.8 kWReference

63.4 kWReference

Air cleaner

oil bathReference

—

Compression

8.75:1Reference

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Rated RPM

2400Reference

2300Reference

Torque

287.5 NmReference

310.5 NmReference

Torque RPM

1200Reference

1600Reference

Oil capacity

60.6 LReference

42.0 LReference

Coolant capacity

19.9 LReference

21.0 LReference

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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Fuel system

—

direct injectionReference

Starter volts

—

12Reference

Transmission

Torque AmplifierReference

IH SynchronReference

Gears

10 forward and 2 reverseReference

16 forward and 4 reverseReference

Type

—

two-speed power shiftReference

Clutch

—

310mm dry discReference

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

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Rear PTO Type

540Reference

540/1000Reference

PTO (claimed)

—

59.0 kWReference

Pressure

—

170.0 barReference

Pump flow

—

29.9 lpmReference

Rear Type

—

IIReference

Control

—

position and draft controlReference

Rear lift

—

3949 kgReference

Dimensions

Wheelbase

217 cmReference

—

Weight

9635 to 9875 poundsReference

8465 to 9082 poundsReference

Front tire

7.50-18Reference

Rear tire

18.4/15-34Reference

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Ag front

7.50-18Reference

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Ag rear

18.4/15-34Reference

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Industrial rear

16.9/14-34Reference

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Length

362 cmReference

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Width

198 cmReference

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Height (steering wheel)

187 cmReference

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Ground clearance

50 cmReference

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Clearance (front axle)

44 cmReference

—

Operating

4479 kgReference

—

Ballasted

6919 kgReference

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2WD Wheelbase

—

238 cmReference

4WD Wheelbase

—

234 cmReference

2WD Rear tire

—

16.9R34Reference

2WD Standard tires (ag)

—

Front: 7.50-18. Rear: 16.9R34Reference

4WD Standard tires (ag)

—

Front: 13.6R24. Rear: 18.4R34Reference

2WD Length

—

368 cmReference

4WD Length

—

382 cmReference

2WD Weight

—

3839 kgReference

4WD Weight

—

4119 kgReference

2WD Clearance (front axle)

—

52 cmReference

4WD Clearance (front axle)

—

40 cmReference

Clearance (rear axle)

—

73 cmReference

2WD Front tread

—

134 to 182 cmReference

4WD Front tread

—

165 to 180 cmReference

Rear tread

—

157 to 198 cmReference

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

—

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

Capacities

Fuel

—

106.0 LReference

Front axle

—

9.0 LReference

Electrical

Ground

—

negativeReference

Charging system

—

alternatorReference

Charging amps

—

33Reference

Battery volts

—

12Reference

Battery AH

—

88Reference

International Harvester 856XL Height

2WD Cab

—

266 cmReference

4WD Cab

—

268 cmReference

Exhaust

—

282 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.