Ford 6600 Overview
The Ford 6600 is a Ford tractor with two diesel inline-four engine options: 256 ci (4.2 L) and 267.9 ci (4.4 L).
Two transmission families drive the chassis: a conventional gear arrangement and a Dual-Power setup, with final drives configured as inboard planetary and a mechanical rear differential lock for traction.
Serial numbers, model codes, and configuration details determine exact equipment; rely on operator manuals, service literature, and test reports to verify the specific build before ordering parts or performing service decisions.
Ford 6600 Quick Answers
- Production yearsThe Ford 6600 was produced from 1975 through 1981.
- PowerPublished power data includes 75.5 hp gross and 72.5 hp net; drawbar performance is around 57.87 hp, depending on configuration.
- EngineThe Ford 6600 engine options include 256 ci 4.2 L and 267.9 ci 4.4 L.
- PTO and hitchRear PTO is independent with 540 (1.375) rear speed and a Category II hitch.
- Service capacityCapacities include engine oil 9 qts (8.5 L) and coolant 13 qts (12.3 L).
Engine and Power
Engine and power specs: two diesel inline-four options, a 256 ci (4.2 L) and a 267.9 ci (4.4 L); both rated around 2100 rpm with torque near 200 lb-ft. The gasoline engine option was available through 1978; diesel-only from 1979 onward.
Diesel engine
Ford / diesel / 4-cylinder / liquid-cooled
| Displacement | 256 ci 4.2 L |
|---|---|
| Bore Stroke | 4.4x4.2 inches 112 x 107 mm |
| Power Net | 72.5 hp 54.1 kW |
| Power Gross | 75.5 hp 56.3 kW |
| Air Cleaner | oil bath |
| Compression | 16.3:1 |
| Rated Rpm | 2100 |
| Torque | 200 lb-ft 271.2 Nm |
| Torque Rpm | 1400 |
| Starter Volts | 12 |
| Engine Oil Capacity | 9 qts 8.5 L |
| Coolant Capacity | 13 qts 12.3 L |
Diesel engine
Ford / diesel / 4-cylinder / liquid-cooled inline / The larger Blue Power Special engine was available in 1981 only. Advertised power performance was the same as the 4.2L.
| Displacement | 267.9 ci 4.4 L |
|---|---|
| Bore Stroke | 4.4094x4.4094 inches 112 x 112 mm |
| Rated Rpm | 2100 |
| Starter Volts | 12 |
Diesel engine
Ford / gasoline / 4-cylinder / liquid-cooled inline / The gasoline engine was available on the 6600 through 1978. Starting in 1979, only the diesel engine was available.
| Displacement | 256 ci 4.2 L |
|---|---|
| Bore Stroke | 4.4x4.2 inches 112 x 107 mm |
| Compression | 7.75:1 |
| Rated Rpm | 2100 |
| Starter Volts | 12 |
Manufacturer
Manufacture years
Tested PTO
Tested drawbar
Transmission
Transmission options include a gear arrangement and a Dual-Power two-speed power-shift setup, offering 8 forward/2 reverse and 16 forward/4 reverse configurations, respectively. Clutch is a 304 mm dry disc.
8-speed gear
| Type | gear |
|---|---|
| Gears | 8 forward and 2 reverse |
| Clutch | 304mm dry disc |
Dual-Power
| Name | Dual-Power |
|---|---|
| Type | two-speed power shift |
| Gears | 16 forward and 4 reverse |
PTO and Hitch
Rear PTO is independent; rear type 540 (1.375) with Category II hitch; official rear lift is listed at 4040 lbs (1832 kg).
Rear PTO
Rear PTO type
Rear hitch
Rear lift
Hydraulics
Open-center hydraulics with up to 2100 psi pressure and a 9.7 gpm pump flow; valve count typically 1 or 2.
Type
Pressure
Pump flow
Valves
Fluids, Battery, and Service Facts
Maintenance capacity notes include engine oil 9 qts (8.5 L) and coolant 13 qts (12.3 L); fuel, oil, and electrical details are listed in manuals and test reports for validation.
Fuel tank
Battery volts
Battery Ah
Tires and Dimensions
Tire and dimension values can vary by wheel, axle, and configuration.
Wheelbase
Weight
Length
Width
Front tire
Rear tire
Ag front
Ag rear
Electrical
Electrical rows are included when documented.
Ground
Charging system
Charging amps
Battery volts
Serial Number Lookup
Serial rows help identify model year and configuration; factory prefixes and regional builds require supporting documentation to apply year tables safely.
1975
1976
1977
1978
1979
1980
1981
location
Manuals and Documents
The documents below add manual, parts, and test context for the Ford 6600. They are useful for controls, service categories, parts matching, and tested-performance details that do not fit into short spec rows.
Match coverage carefully before relying on a document for service decisions, especially when one manual, catalog, or report covers several models, fuel types, transmissions, or tractor variants.
- Ford Tractor Operators Manual 5600/6600/7600Operator manual for Ford 5600/6600/7600 tractors, includes operating instructions, controls, lubrication points, and safety notes.Open source
- Ford 5600 6600 7600 Tractor Operators ManualOperator's manual for Ford 5600/6600/7600 tractors; maintenance schedules and lubrication points included.Open source
- Ford 6600 Tractor Owner's ManualOwner's manual for Ford 6600 tractor; operating instructions and basic maintenance guidance.Open source
- Ford 6600 Workshop Service ManualWorkshop/service manual for Ford 6600 tractors; repair procedures, troubleshooting, torque specs likely included.Open source
- Salpicaderas para Ford 6600Parts diagrams/diagrams for Ford 6600 body panels and exterior components; vendor catalog context for parts matching.Open source
- Test 1217: Ford 6600 and 6700 Diesel 8-SpeedNebraska Tractor Test for Ford 6600/6700 Diesel 8-Speed; includes test protocols and performance data.Open source
- Nebraska Tractor Test Data 1980Nebraska OECD-standard test data for Ford 6600 Diesel; includes power, PTO, and drawbar results.Open source
Parts Checks Before Ordering
Do not order Ford 6600 parts from the model name alone. Match the part to the tractor's model code, serial range, engine, transmission, and PTO setup before selecting service parts.
Filters, fluids, belts, electrical parts, clutch and PTO parts, and hydraulic parts can vary by setup. Exact part numbers require a parts catalog, manual, or trusted supplier source before they become recommendations.
Accuracy Note
Tractor specifications can vary by year, region, factory configuration, installed equipment, and later repairs. Match serial range, engine, transmission, PTO setup, and model code before ordering parts or doing service work.