Ford 6600 Overview
The Ford 6600 is a Ford utility tractor built from 1975 through 1981. Published engine rows include a 256 ci diesel, a 256 ci gasoline engine available through 1978, and a 267.9 ci diesel listed for 1981 Blue Power Special coverage.
Transmission coverage splits between the 8-speed gear tractor and the 16-speed Dual-Power setup. Nebraska test results need the same split: Test 998 is gasoline 8-speed coverage, Test 1217 is diesel 8-speed coverage, and Test 1224 is diesel 16-speed coverage.
For parts or service work, match the tractor's model code, serial row, engine fuel, transmission, PTO setup, and chassis before treating a brief listing as universal.
Ford 6600 Quick Answers
- Production yearsThe Ford 6600 was produced from 1975 through 1981.
- PowerNebraska results are configuration-specific. Gasoline 8-speed Test 998 lists 67.31 PTO hp and 57.87 drawbar hp. Diesel 8-speed Test 1217 lists 70.56 PTO hp and 55.68 drawbar hp. Diesel 16-speed Test 1224 lists 68.10 PTO hp and 55.73 drawbar hp.
- EnginePublished engine rows include a 256 ci 4.2 L diesel, a 256 ci 4.2 L gasoline engine through 1978, and a 267.9 ci 4.4 L diesel listed for 1981.
- 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
The Ford 6600 engine table is not diesel-only. It includes a 256 ci diesel, a 256 ci gasoline engine listed through 1978, and a 267.9 ci diesel tied to 1981 Blue Power Special coverage. Nebraska horsepower rows should stay with their test configuration instead of being blended into one power number.
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 |
Gasoline 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
Transmission
Transmission rows split between an 8 forward/2 reverse gear setup and a 16 forward/4 reverse Dual-Power setup. That split matters because Nebraska Test 1217 covers diesel 8-speed performance, while Test 1224 covers diesel 16-speed performance.
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 listed as independent with 540-rpm equipment and a Category II rear hitch. Use the exact fuel and transmission test before comparing PTO horsepower.
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
Operator-manual entries and Nebraska reports add operating, service-category, and tested-configuration context for the Ford 6600.
Match coverage carefully before relying on a document for service decisions, especially when one manual or report covers several models, fuel types, transmissions, or tractor variants.
Manual
- Ford Tractor Operators Manual 5600/6600/7600operation, safety notes, maintenance, lubrication
Operator manual preview for Ford 5600, 6600, and 7600 tractors.
Open manual PDF - Ford 5600 6600 7600 Tractor Operators Manualoperation, maintenance, lubrication
Manual listing for the Ford 5600, 6600, and 7600 operator manual. Use it as coverage confirmation, not as a substitute for matching the tractor.
View manual listing
Tractor test report
- Nebraska Test 998: Ford 5000 gasoline 8-speed, also Ford 6600tested performance
Official Nebraska Tractor Test page for Ford 5000 gasoline 8-speed coverage that also identifies Ford 6600 gasoline 8-speed applicability.
Open test report - Nebraska Test 1217: Ford 6600/6700 diesel 8-speedtested performance
Official Nebraska Tractor Test page for Ford 6600 and 6700 diesel 8-speed 2WD coverage.
Open test report - Nebraska Test 1224: Ford 6600 diesel 16-speedtested performance
Official Nebraska Tractor Test page for the Ford 6600 diesel 16-speed 2WD configuration.
Open test report
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.