farmall 666
![]() | 1972 - 1976
Row-Crop tractor | 1972 - 1976 | Row-Crop tractor |
|---|---|---|---|
1972 - 1976 | |||
Row-Crop tractor | |||
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. |
|---|
Production | |
|---|---|
Manufacturer | Farmall (a part of International Harvester) |
Row-Crop tractor | |
Built in Rock Island, Illinois, USA | |
Total built | 9,367 |
Original price | $11,875 |
Farmall 666 Engines | |
|---|---|
International Harvester 5.1L 6-cyl diesel | |
International Harvester 4.8L 6-cyl gasoline | |
Gas Fuel tank | 33 gal
124.9 L |
Diesel Fuel tank | 31 gal
117.3 L |
Engine details ... | |
Farmall 666 Transmissions | |
|---|---|
5-speed | |
hydrostatic | |
10-speed two-speed power shift | |
Transmission details ... |
Farmall 666 Power | |
|---|---|
Engine (gross) | 75 hp
55.9 kW |
Drawbar (claimed) | 57 hp (gear)
42.5 kW |
| 54 hp (hydro)
40.3 kW |
PTO (claimed) | 65 hp (gear)
48.5 kW |
| 69 hp (hydro)
51.5 kW |
Drawbar (tested) | 58.01 hp
43.3 kW |
PTO (tested) | 69.61 hp
51.9 kW |
Performance test details ... | |
Mechanical | |
|---|---|
Two-wheel drive | |
Power steering | |
Dry disc brakes | |
Open operator station. Two-post ROPS or canopy optional. Cab available with air-conditioning. |
Photos | |
|---|---|
![]() | |
Farmall 666 photos... |
Hydraulics | |
|---|---|
Type | open center |
Pump flow | 12 gpm
45.4 lpm |
Tractor hitch | |
|---|---|
Rear Type | II |
Type | IH Fast Hitch |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 540 (1.375) |
Dimensions & Tires | |
|---|---|
Wheelbase | 103 inches
261 cm |
Weight | 6780 to 7420 pounds |
Front tire | 7.50-16 |
Rear tire | 15.5-38 |
Full dimensions and tires ... | |
666 Serial Numbers | |
|---|---|
Location: | Clutch housing, right side |
1972 | 7500 |
1973 | 8200 |
1974 | 11585 |
1975 | 13131 |
1976 | 15739 |
FAQ: How to read a serial number table. | |
Electrical | |
|---|---|
Charging system | alternator |
Battery volts | 12 |
References | |
|---|---|
![]() | |
Farm Equipment Reference Catalog published in 1972, by International Harvester |
Recommended Products
Advertisement · Featured Tractor-Related Products

Turn Signal Light Kit
OEM John Deere Part Number: BUC10608 Replaces OEM Part Number: BM26588, BUC10608

JZGRDN Left Warning Lamp
art Name: Left Warning Lamp Part Number: LVA11213 Compatible with John Deere 4010 4110 4115 Tractors Condition: New&Easy Installation Package Includes: Left Warning Lamp*1

24V Kids Ride on Tractor with Trailer & Front Loader
24V kids ride on tractor equipped with a front loader and a detachable trailer, kids can use the trailer to transfer small things, the trailer can be easily disassembled. And kids can easily operate the front loader, making scoops, lifts, carries and dumps from the driver's seat, it can be a kids ride on excavator. Through riding this 24 volt ride on tractor, children can clean the garden with their parents and enjoy the happy parent-child time.

John Deere Brake and Parts Cleaner
Brake and Parts Cleaner John Deere Brake and Parts Cleaner features a premium, VOC-compliant formula that outperforms the older chlorinated cleaners. It provides high-speed, deep-cleaning action without leaving a sticky residue.
* This page contains affiliate links, purchases may generate revenue for this site


