Compare/International Harvester 656 vs International Harvester 684

International Harvester 656 vs International Harvester 684

Verdict: International Harvester 656 vs International Harvester 684

The International Harvester 656 and the International Harvester 684 are both tractors — here is how they stack up on the figures that matter. International Harvester 656 leads on rated power with 64 hp against 63 hp. International Harvester 684 is the lighter machine (5,620 kg vs 5,800 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. International Harvester 684 is the newer design (1977 vs 1965). In short: choose the International Harvester 656 for outright pulling power, or the International Harvester 684 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a 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

64 hp

63 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

International HarvesterReference

With 16.9-30 rear tires.Reference

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

Variants

2656

industrial tractorReference

—

IH 656

utility tractorReference

—

Farmall 656

row-crop tractorReference

—

656HC

high-clearReference

—

Engine

Fuel tank

87.1 LReference

—

Plows

4-5Reference

4Reference

Displacement

4.6 LReference

3.9 LReference

Bore/Stroke

90 x 112 mmReference

98 x 129 mmReference

Air cleaner

dryReference

Rated RPM

2300 (late)Reference

2400Reference

Idle RPM

900-1800Reference

—

Oil capacity

8.5 LReference

34.1 LReference

Coolant capacity

19.9 LReference

13.6 LReference

Firing order

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

—

Compression

8.8:1Reference

—

Engine

—

51.5 kWReference

Drawbar (claimed)

—

41.7 kWReference

Drawbar (tested)

—

40.7 kWReference

Power

—

51.5 kWReference

Starter volts

—

12Reference

Power at rated engine speed

—

46.6 kWReference

Max power

—

40.7 kWReference

Transmission

Gears

infinite forward and reverse (2-range)Reference

16 forward and 8 reverseReference

Clutch

279.4mm cerametallic discReference

dry discReference

Transmission

Torque AmplifierReference

PTO & Hydraulics

PTO (claimed)

47.6 kWReference

46.6 kWReference

Type

hydrostaticReference

two-speed power shiftReference

Valves

0 to 2Reference

1 or 2Reference

Pump flow

45.4 lpmReference

58.3 lpmReference

Rear Type

IIReference

Control

lower-link draft sensingReference

position and draft controlReference

Rear PTO

independentReference

Rear PTO Type

540/1000Reference

540Reference

PTO (tested)

—

46.6 kWReference

Hydraulic system

—

34.1 LReference

Capacity

—

34.1 LReference

Rear lift

—

1632 kgReference

Power at rated PTO speed

—

43.8 kWReference

Dimensions

Wheelbase

203 cmReference

—

Weight

5800 to 6100 poundsReference

5620 to 6765 poundsReference

Front tire

7.50-16Reference

Rear tire

16.9-38Reference

16.9-30Reference

Ag front

6.00-16 (Hi-Clear)Reference

7.50-16Reference

Ag rear

15.5-38 (Hi-Clear)Reference

16.9-30Reference

Length

386 cmReference

—

Width

187 cmReference

—

Height (steering wheel)

157 cmReference

—

Height (hood)

142 cmReference

—

Gas Shipping weight

2630 kgReference

—

Diesel Shipping weight

2766 kgReference

—

Clearance (front axle)

48 cmReference

—

Bar rear axle

69 mmReference

Front tread

137 to 213 cmReference

—

Rear tread

137 to 198 cmReference

—

Utility Wheelbase

—

223 cmReference

Row-crop Wheelbase

—

214 cmReference

4WD Wheelbase

—

216 cmReference

Low-profile Wheelbase

—

212 cmReference

Utility Length

—

360 cmReference

Row-crop Length

—

353 cmReference

4WD Length

—

373 cmReference

Low-profile Length

—

360 cmReference

Utility Width

—

187 cmReference

Row-crop Width

—

190 cmReference

4WD Width

—

187 cmReference

Low-profile Width

—

199 cmReference

Utility Ground clearance

—

45 cmReference

Row-crop Ground clearance

—

45 cmReference

4WD Ground clearance

—

45 cmReference

Low-profile Ground clearance

—

27 cmReference

Utility Shipping

—

2594 kgReference

Row-crop Shipping

—

2707 kgReference

4WD Shipping

—

3068 kgReference

Low-profile Shipping

—

2549 kgReference

Ballasted

—

4381 kgReference

Utility Steering wheel

—

160 cmReference

Row-crop Steering wheel

—

160 cmReference

4WD Steering wheel

—

160 cmReference

Low-profile Steering wheel

—

143 cmReference

International Harvester 656 attachments

656 Serial Numbers

1966

7501 (IH)Reference

—

1967

7842 (IH)Reference

—

1968

9929 (IH)Reference

—

1969

11802 (IH)Reference

—

1970

13353 (IH)Reference

—

1971

14194 (IH)Reference

—

1972

14952 (IH)Reference

—

1973

15746 (IH)Reference

—

Location:

Clutch housing, right sideReference

—

Electrical

Charging system

alternatorReference

—

Charging amps

55Reference

45Reference

Ground

—

negativeReference

Battery volts

—

12Reference

Attachment overview

Speeds

Capacities

Fuel

—

75.7 LReference

684 Serial Number Location

684 Serial Numbers

1978

—

501Reference

1979

—

1687Reference

1980

—

3533Reference

1981

—

6037Reference

1982

—

8001Reference

1983

—

8512Reference

1984

—

9352Reference

International Harvester 684 Height

ROPS

—

254 cmReference

Test results

Fuel use

—

15.5 l/hourReference

Max pull

—

3110 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.