Compare/International Harvester 664 vs International Harvester 684

International Harvester 664 vs International Harvester 684

Verdict: International Harvester 664 vs International Harvester 684

The International Harvester 664 and the International Harvester 684 are both tractors — here is how they stack up on the figures that matter. International Harvester 684 leads on rated power with 63 hp against 62 hp. International Harvester 664 is the lighter machine (2,698 kg vs 5,620 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 1972). In short: choose the International Harvester 684 for outright pulling power, or the International Harvester 664 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

62 hp

63 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

International HarvesterReference

With 14.9-30 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

Final drives

bull gearReference

—

Engine

Fuel tank

66.2 LReference

—

Drawbar (claimed)

40.3 kWReference

41.7 kWReference

Displacement

3.9 LReference

Bore/Stroke

98 x 129 mmReference

Fuel system

direct inejctionReference

—

Air cleaner

dryReference

Compression

16:1Reference

—

Rated RPM

2400Reference

Idle RPM

900-2400Reference

—

Starter

electricReference

—

Starter volts

12Reference

Oil capacity

9.5 LReference

34.1 LReference

Coolant capacity

16.1 LReference

13.6 LReference

Engine

—

51.5 kWReference

Plows

—

4Reference

Drawbar (tested)

—

40.7 kWReference

Power

—

51.5 kWReference

Power at rated engine speed

—

46.6 kWReference

Max power

—

40.7 kWReference

Transmission

Torque AmplifierReference

Gears

5 forward and 1 reverseReference

16 forward and 8 reverseReference

PTO & Hydraulics

PTO (claimed)

46.2 kWReference

46.6 kWReference

Type

gearReference

two-speed power shiftReference

Pump flow

45.4 lpmReference

58.3 lpmReference

Rear Type

IIReference

Control

draft controlReference

position and draft controlReference

Rear PTO

independentReference

Clutch

279mm dry discReference

dry discReference

Rear PTO Type

1000 (1.375)Reference

540Reference

Engine RPM

1000@2240Reference

—

PTO (tested)

—

46.6 kWReference

Hydraulic system

—

34.1 LReference

Capacity

—

34.1 LReference

Valves

—

1 or 2Reference

Rear lift

—

1632 kgReference

Power at rated PTO speed

—

43.8 kWReference

Dimensions

Wheelbase

187 cmReference

—

Weight

2698 kgReference

5620 to 6765 poundsReference

Front tire

6.50-16Reference

7.50-16Reference

Rear tire

14.9-30Reference

16.9-30Reference

Ag front

6.50-16Reference

7.50-16Reference

Ag rear

14.9-30Reference

16.9-30Reference

Length

353 cmReference

—

Width

177 cmReference

—

Height (steering wheel)

157 cmReference

—

Shipping weight

2698 kgReference

—

Clearance (front axle)

48 cmReference

—

Clearance (drawbar)

25 cmReference

—

Front tread

137 to 198 cmReference

—

Rear tread

142 to 193 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

Bar rear axle

—

69 mmReference

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

664 Serial Numbers

1972

2501Reference

—

1973

3212Reference

—

Electrical

Charging system

alternatorReference

—

Charging amps

32Reference

45Reference

Batteries

2Reference

—

Battery volts

6Reference

12Reference

Battery AH

135Reference

—

Ground

—

negativeReference

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.