Automatic transmission 3C3P-7000-GK Ford F250 F350 Excursion 6.0L V8
The part number 3C3P-7000-GK identifies the heavy-duty TorqShift 5R110W 5-speed automatic transmission. This specific unit was engineered to handle the high torque and cooling requirements of the 6.0L Power Stroke V8 Diesel engine.
It was a revolutionary transmission for Ford at the time, featuring an “adaptive” shift logic and a unique 6-gear physical architecture (though it only uses 5 forward ratios in any given shift sequence).
Technical Specifications: 5R110W
| Feature | Details |
| Manufacturer | Ford Motor Company (TorqShift) |
| Gearing | 5-Speed (with an unadvertised 6th “cold weather” gear) |
| Max Torque | $approx$ 1,100 lb-ft (input capacity) |
| Fluid Type | MERCON SP (Strictly required for early units) or MERCON LV |
| Weight | $approx$ 120 kg (270 lbs) |
Vehicle Compatibility
This 3C3P-GK variant is typically found in the “Early” 6.0L Diesel models:
-
Ford F-250 / F-350 Super Duty: (2003–2005)
-
Ford Excursion: (2003–2005)
-
Ford E-Series Van: (2004–2010)
Critical Inspection Points for Resale/Install
The 5R110W is exceptionally robust, but even a low-mileage unit needs to be checked for these specific “6.0L Era” issues:
-
Solenoid Body (EPC): The Pressure Control Solenoid is a common failure point. If the transmission has “harsh shifts” or “flares” between gears, the solenoid screen is likely clogged with fine debris.
-
External Fluid Filter: Unlike most transmissions, the 6.0L 5R110W uses an external bypass filter located on the passenger side frame rail or near the radiator. If this filter was never changed, internal wear increases significantly.
-
Reverse Planetary Gear: In high-mileage or heavy-towing units, the reverse planetary pins can back out, leading to a total loss of reverse.
-
The “Tow/Haul” Switch: Check the wiring harness at the transmission plug. The 6.0L harness is prone to heat-soak, which can cause intermittent communication errors with the TCM (Transmission Control Module).
Inventory Identification
-
3C3P Prefix: Indicates the 2003 design year (the launch year of the 6.0L Diesel).
-
“GK” Suffix: This specific calibration code identifies the gear ratios and internal clutch pack count meant for the F-Series/Excursion chassis.
Professional Installation Tip
When installing a used or remanufactured 5R110W, you must perform a “Transmission Adaptive Strategy” clear using a scan tool. The TCM “learns” the wear patterns of the previous transmission; failing to reset this can lead to erratic shifting or “burnt” clutches on the replacement unit within the first 50 miles.
Reviews
There are no reviews yet.