Farmall 666 Engine


Farmall 666 tractor photo
1972 - 1976
Row-Crop tractor

Note: the Farmall model 666 is the same as the International Harvester 666. The following data is from the 666 listing.
Engine options
International Harvester 5.1L 6-cyl diesel
International Harvester 4.8L 6-cyl gasoline
Engine Detail
International Harvester D312
diesel
6-cylinder
liquid-cooled
Displacement312 ci
5.1 L
Bore/Stroke3.875x4.410 inches
98 x 112 mm
Power (gross)75 hp
55.9 kW
Fuel systemdirect injection
Air cleanerdual stage dry
Compression17:1
Rated RPM2000
Starter volts12
Coolant capacity21 qts
19.9 L
Engine Detail
International Harvester C291
gasoline
6-cylinder
liquid-cooled
Displacement291 ci
4.8 L
Bore/Stroke3.75x4.39 inches
95 x 112 mm
Power (gross)75 hp
55.9 kW
Air cleanerdual stage dry
Compression7.5:1
Rated RPM2000
Starter volts12
Coolant capacity21 qts
19.9 L
Page information
Peter Easterlund - owner of TractorData.com
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Peter Easterlund - owner/author
Email: Peter@TractorData.com
Updated on February 6, 2024
©2000-2024 - TractorData.com®. Notice: Every attempt is made to ensure the data listed is accurate. However, differences between sources, incomplete listings, errors, and data entry mistakes do occur. Consult official literature from the manufacturer before attempting any service or repair.