International Harvester 660

Name: International Harvester 660
Brand: International Harvester

Power

95 hp

Production

1959-1963

Engine

LP gas, 6-cylinder

Transmission

Sliding gear

Drive

2WD

80–100 HP 1950s 1960s

From the same series:

560

Introduction

International Harvester 660 Standard-Tread Tractor

The International Harvester 660 is a standard-tread agricultural tractor manufactured between 1959 and 1963. Part of the International Harvester series, this two-wheel-drive machine was designed for heavy-duty field operations and represents an era of robust mechanical engineering in American agricultural equipment.

Engine and Performance

The tractor is powered by an International Harvester C-263 liquid-cooled, six-cylinder L-head engine. With a displacement of 263 cubic inches (4.3 liters), it produces 95 hp. The engine is tuned for high-torque applications, delivering 212 lb-ft at a rated engine speed of 1200 RPM, which provides consistent pulling power for demanding agricultural implements.

Transmission and Drivetrain

The 660 offers two transmission configurations: a standard 5-speed sliding gear transmission or an optional 10-speed unit featuring the 'Torque Amplifier' (TA). The TA system allows the operator to shift between direct drive and a lower gear ratio on-the-go without using the main clutch, enhancing operational efficiency during varying load conditions.

Hydraulics and PTO

The hydraulic system provides a standard flow rate of 12 gpm, with an optional upgrade to 17 gpm for more demanding hydraulic requirements. The tractor is equipped with an independent rear power take-off (PTO) operating at 540 RPM, allowing for the operation of driven implements independent of the tractor's forward motion.

Dimensions and Handling

Built on an 85.5-inch wheelbase, the 660 features a stable footprint with a minimum width of 78 inches. It utilizes manual steering as standard, with hydrostatic power steering available as an option to reduce operator fatigue. Braking is handled by independent mechanical disc brakes, ensuring precise control in the field.

Conclusion

"With 6,945 units produced, the International Harvester 660 remains a notable example of 1960s agricultural machinery. Its combination of a high-torque engine, flexible transmission options, and stable chassis makes it well-suited for general field work and heavy-duty traction tasks."

Introduction

Production Information of International Harvester, 660

The production information of the tractor (660) includes details about its manufacturing.

Standard-tread tractor


Manufacturer	International Harvester
Original price	$6,000 (1963)
Total built	6,945

Dimension and Tires Information of International Harvester, 660

This section sums up the dimension and tires information of the tractor.


Wheelbase	85.5 inches [217 cm]
Ground clearance	19.7 inches (frame) [50 cm]
Height (steering wheel)	74 inches [187 cm]
Length	142.6 inches [362 cm]
Clearance (front axle)	17.4 inches [44 cm]
Width	78 inches (min) [198 cm]


Ag front	7.50-18
	16.9/14-34
Ag rear	18.4/15-34
Industrial rear	23.1/18-26

Engine Specifications of International Harvester, 660

Get the specifications for the engine and if different options are available.

International Harvester C-263

Liquid-cooled vertical L-head

LP gas

6-cylinder


Coolant capacity	23 qts [21.8 L]
Air cleaner	Oil bath
Compression	8.75:1
Torque	212 lb-ft [287.5 Nm]
Rated RPM	2400
Displacement	263 ci [4.3 L]
Power	95 hp [70.8 kW]
Bore/Stroke	3.5625x4.3906 inches [90 x 112 mm]
Coolant capacity	21 qts [19.9 L]
Oil capacity	9 qts [8.5 L]
Torque RPM	1200

Transmission Information of International Harvester, 660Y

Discover all variants of transmission available for this tractor model.

Transmission variants 1


Transmission	Sliding gear
Gears	5 forward and 1 reverse
Oil capacity	64 qts [60.6 L]

Transmission variants 2

The Torque Amplifier (TA) provides a clutchless shift-on-the-move between direct drive (DD) and the lower TA speed.


Transmission	Torque Amplifier
Gears	10 forward and 2 reverse
Oil capacity	64 qts [60.6 L]

5-speed

10-speed

Mechanical Specs of International Harvester, 660Y

This section summarizes all mechanical information such as the brake system and other specifications.

Two-wheel drive

Open operator station.

Independent mechanical disc brakes


Steering	Manual
	Hydrostatic power optional

Power Information of International Harvester, 660Y

Discover the power specifications and options available for this tractor model but also PTO (Power Take-off) information.


Rear PTO	Independent
Rear PTO Type	540

Hydraulics Specifications of International Harvester, 660

Hydraulic system type, pressure, pump flow and valves.


Valves	1
Steering flow	2.5 gpm [9.5 lpm]
Total flow	12 gpm [45.4 lpm]
	17 gpm (optional) [64.3 lpm]

Frequently asked questions

How much horsepower does the International Harvester 660 have?

The International Harvester 660 delivers 95 HP.

What years was the International Harvester 660 produced?

The International Harvester 660 was produced in 1959-1963.

What engine does the International Harvester 660 have?

The International Harvester 660 is powered by a LP gas, 6-cylinder engine.

What transmission does the International Harvester 660 use?

The International Harvester 660 uses a Sliding gear transmission.

Is the International Harvester 660 4WD?

The International Harvester 660 is available in 2WD.

More International Harvester models

95695 HP · 1982 - 1985 88694 HP · 1976 - 1981 A-76698 HP · 1972 - 1978 96691 HP · 1971 - 1976 786B100 HP · 1981 - 1982 95590 HP · 1977 - 1982 1055100 HP · 1977 - 1982 3288100 HP · 1981 - 1985

View all 252 International Harvester models →

Compare the International Harvester 660 with another model

Popular comparisons

vs John Deere 2941 vs John Deere 5095M vs Massey Ferguson 1014 vs Massey Ferguson 1095 vs Kubota M9540 vs Kubota M9570