International Harvester 756 Tractor

Manufacturer International Harvester
Price 8,300(USD)
Model 756
Equipment Type -
Factory rock island, Illinois, USA

INTERNATIONAL HARVESTER 756 POWER

Drawbar (claimed) 69hp / 51.5kW
PTO (claimed) 76hp / 56.7kW

ENGINES OVERVIEW

The International Harvester 756 features a robust 5.1L 6-cylinder diesel engine, offering higher torque and fuel efficiency compared to the 4.8L 6-cylinder gasoline variant, making it ideal for heavy-duty applications like plowing and towing. The diesel option typically provides reduced operational costs over time, though initial purchase prices may be higher. In contrast, the gasoline engine offers easier starting in cold weather but generally less power for demanding tasks.

Description Interntional Harvester 5.1L 6-cyl diesel International Harvester 4.8L 6-cyl gasoline

ENGINE DETAIL 1

The International Harvester 756 tractor features a robust D-310 diesel engine with a displacement of 310ci (5.1L) and a 6-cylinder design, making it suitable for heavy-duty agricultural tasks. With a rated RPM of 2300, it delivers optimal torque for tilling and plowing, while its oil and coolant capacities (12qts and 23.5qts respectively) support extended operation times, though regular maintenance is essential to prevent overheating. Consider its performance in applications requiring consistent power and durability, as it may face challenges in fuel efficiency during prolonged heavy use.

Description Interntional Harvester D-310 diesel 6-cylinder liquid-cooled
Displacement 310ci / 5.1L
Bore/Stroke 3.875x4.375inches / 98x 111 mm
Rated RPM 2300
Oil capacity 12qts / 11.4L
Coolant capacity 23.5qts / 22.2L

ENGINE DETAIL 2

The International Harvester 756 features a robust C-291 gasoline engine with a displacement of 291ci (4.8L) and a rated RPM of 2300, providing sufficient power for moderate agricultural tasks. Its bore and stroke dimensions of 3.75 x 4.39 inches (95 x 112 mm) allow for a good balance of torque and efficiency, though lower RPMs may limit high-speed applications. Consider the 9-quart oil and 20.5-quart coolant capacities for optimal maintenance and longevity, highlighting the importance of regular oil changes and cooling system checks to prevent overheating during extended use.

Description International Harvester C-291 gasoline 6-cylinder liquid-cooled
Displacement 291ci / 4.8L
Bore/Stroke 3.75x4.39inches / 95x 112 mm
Rated RPM 2300
Oil capacity 9 qts /8.5 L
Coolant capacity 20.5qts / 19.4L

INTERNATIONAL HARVESTER 756 ENGINES

The International Harvester 756 features a robust 5.1L 6-cylinder diesel engine, offering superior torque for demanding agricultural tasks, while the alternative 4.8L 6-cylinder gasoline engine provides versatility for lighter operations. With a substantial 33-gallon fuel tank, the tractor can sustain extended work hours, reducing downtime for refueling. However, potential challenges include higher maintenance costs for the diesel variant and fuel efficiency considerations depending on the engine choice and workload.

Description Interntional Harvester 5.1L 6-cyl diesel International Harvester 4.8L 6-cyl gasoline
Fuel tank 33gal / 124.9L

TRANSMISSION

The International Harvester 756 features a two-speed power shift transmission, offering 16 forward and 8 reverse gears for enhanced operational flexibility. The torque amplifier improves engine efficiency under load, allowing seamless power shifts that can minimize engine strain during heavy-duty tasks. This system is advantageous for varied agricultural applications, but operators must be accustomed to the complexity of managing multiple gear selections efficiently.

Transmission Torque Amplifier
Type two-speed power shift
Gears 16 forward and 8 reverse
Description Four gears in two ranges, plus reverse range, with two-speed power shift.

SPEEDS

Description With 18.4-30 rear tires

MECHANICAL

The International Harvester 756 features a versatile 4x2 or 4WD system, providing adaptability for various terrain challenges, especially beneficial in rugged agricultural environments. The optional cab allows for extended operational comfort, while the 16-speed two-speed power shift transmission enhances efficiency by offering a wide range of speed adjustments, suited for diverse field tasks. However, the open operator station may expose the operator to environmental elements, which could be a disadvantage in inclement weather conditions.

Chassis 4x2 2WD/4x4 MFWD 4WD
Steering power
Cab Open operator station. Cab optional.
Transmission 16-speed two-speed power shift

HYDRAULICS

Type open center
Pump flow 12gpm / 45.4lpm

TRACTOR HITCH

Rear Type II

POWER TAKE-OFF (PTO)

Rear PTO independent
Rear RPM 540/1000
Engine RPM 540@2100 / 1000@2100

INTERNATIONAL HARVESTER 756 TIRES

The International Harvester 756 features an Ag front tire size of 7.50-18 and rear tire size of 18.4-30, providing a balanced configuration optimized for traction and stability in various agricultural tasks. The larger rear tires enhance load-bearing capacity and power transfer, ideal for heavy-duty applications like plowing or hauling. However, the front tire size may limit steering precision in tight spaces, so consider this when operating in confined areas.

Ag front 7.50-18
Ag rear 18.4-30

DIMENSIONS

Wheelbase 101inches / 256cm
Shipping weight 8400lbs / 3810kg

DIMENSIONS & TIRES

The International Harvester 756 tractor, with a wheelbase of 101 inches and a weight of 8,400 lbs, provides stability and a lower center of gravity, advantageous for handling heavy-duty tasks. Its front tire size of 7.50-18 and rear tire size of 18.4-30 offer good traction and flotation, beneficial for various field conditions. However, the tractor's weight may limit transportability and require proper loading equipment for transportation scenarios.

Wheelbase 101inches / 256cm
Weight 8400lbs / 3810kg
Front tire 7.50-18
Rear tire 18.4-30

756 SERIAL NUMBERS

Location Clutch housing, left side
1967 (Farmall) 7501
1968 (Farmall) 9904
1969 (Farmall) 14125
1970 (Farmall) 17832
1971 (Farmall) 18374
1967 (IH) 7501
1968 (IH) 7672
1969 (IH) 8164
1970 (IH) 8284
1971 (IH) 8427


Last Updated 2025-01-01
Stephen is a passionate tractor hobbyist with a deep-seated love for all things mechanized and agricultural. Growing up in a rural setting, he developed a fascination with these mighty machines that have played a crucial role in shaping the farming industry.

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