Compare/International Harvester 706 vs International Harvester 743

International Harvester 706 vs International Harvester 743

Verdict: International Harvester 706 vs International Harvester 743

The International Harvester 706 and the International Harvester 743 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 72 hp. International Harvester 743 is the lighter machine (6,349 kg vs 8,100 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. International Harvester 743 is the newer design (1981 vs 1963). 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

72 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

International HarvesterReference

The Torque Amplifier (TA) provides a hydraulically-actuted under-drive that may be shifted, on the move, with any range and speed selection in the main transmission. Using the TA does not require the clutch or stopping the tractor. With the lever in the forward position, the TA is disengaged and the transmission is in direct drive. To slow the tractor (increasing pulling power) the TA lever should be pulled smoothly and quickly to the rear, engaging the TA. To disengage the TA and return to direct-drive, the TA should be moved forward, with a slight pause at the center position of the lever.Reference

Four gears in each of two ranges, plus reverse range.Reference

Total built

4,884Reference

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Drive

4x4 MFWD 4WD (optional)Reference

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Final drives

—

planetaryReference

Differential lock

—

mechanical rearReference

Variants

Farmall 706

row-cropReference

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IH 706

standard-treadReference

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IH 2706

industrialReference

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706 Hi-Clear

high-cropReference

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Engine

Drawbar (tested)

50.3 kWReference

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Displacement

4.8 LReference

3.9 LReference

Bore/Stroke

95 x 112 mmReference

98 x 129 mmReference

Rated RPM

2300Reference

Firing order

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

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Coolant capacity

19.9 LReference

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Intake valve clearance

0.686 mmReference

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Exhaust valve clearance

0.686 mmReference

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Oil capacity

64.4 LReference

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Sparkplug gap

0.381 mmReference

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Point gap

0.508 mmReference

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Compression

7.5:1Reference

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Power at rated engine speed

57.1 kWReference

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Max power

49.0 kWReference

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Fuel tank

—

106.0 LReference

Engine (gross)

—

54.0 kWReference

Engine (net)

—

49.0 kWReference

Rated Power (net)

—

49.0 kWReference

Power (gross)

—

54.0 kWReference

Starter

—

electricReference

Starter volts

—

12Reference

Transmission

Torque AmplifierReference

SynchronReference

Gears

16 forward and 8 reverseReference

Clutch

12-inch dry discReference

280mm dry discReference

Oil type

IH Hy-TranReference

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PTO & Hydraulics

PTO (tested)

57.1 kWReference

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Hydraulic system

64.3 LReference

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Type

IH Fast HitchReference

partially synchronizedReference

Capacity

64.3 LReference

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Valves

1 or 2Reference

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Pump flow

64.3 lpmReference

29.9 lpmReference

Total flow

90.8 lpmReference

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Steering flow

34.1 lpmReference

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Rear Type

II/IReference

IIReference

Control

torsion bar (optional)Reference

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Rear PTO

independentReference

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Rear PTO Type

540/1000Reference

540/1000 (1.375)Reference

Power at rated PTO speed

53.5 kWReference

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PTO (claimed)

—

46.0 kWReference

Rear lift

—

3099 kgReference

Capacities

Fuel

147.6 LReference

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Diameter

27 cmReference

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Width

261 cmReference

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RPM

1055Reference

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Speed

925.98 meters/minReference

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Dimensions

Wheelbase

220 cmReference

223 cmReference

Weight

8100 to 9160 poundsReference

6349 to 7738 poundsReference

Front tire

7.50-18Reference

7.50-16Reference

Rear tire

18.4-30Reference

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Ag front

11.2-24 (4WD)Reference

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Ag rear

18.4-30Reference

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Length

396 cmReference

378 cmReference

Height (steering wheel)

204 cmReference

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Clearance (front axle)

43 cmReference

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Clearance (drawbar)

30 cmReference

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Rear axle

82 mmReference

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Front tread

142/175/203 cmReference

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Rear tread

152 to 213 cmReference

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Shipping

3792 kgReference

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Operating

4154 kgReference

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Ballasted

4858 kgReference

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2WD Rear tire

—

16.9/14-30Reference

2WD Standard tires (ag)

—

Front: 7.50-16. Rear: 16.9/14-30Reference

4WD Standard tires (ag)

—

Front: 9.5/9-24. Rear: 16.9/14-30Reference

Height

—

262 cmReference

2WD ROPS

—

2879 kgReference

2WD Cab

—

3114 kgReference

4WD ROPS

—

3270 kgReference

4WD Cab

—

3509 kgReference

706 Serial Number Location

706 Serial Numbers

1963

501 (IH)Reference

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1964

1251 (IH)Reference

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1965

3478 (IH)Reference

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1966

4789 (IH)Reference

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1967

5316 (IH)Reference

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Electrical

Ground

negativeReference

Charging amps

32 (alternator)Reference

33Reference

Batteries

2 (diesel)Reference

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Battery volts

6 (diesel)Reference

12Reference

Charging system

—

alternatorReference

Test results

Fuel use

22.0 l/hourReference

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Max pull

3804 kgReference

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Speeds

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.