Ford 6R140 6-Speed Automatic¶
| Field | Value |
|---|---|
| part_id | transmission/6r140 |
| title | 6R140 6-Speed Automatic |
| revision | 1.0.0 |
| status | active |
| category | transmission/auto |
| unit_of_measure | each |
| published | true |
Human summary¶
The 6R140 is Ford’s heavy-duty 6-speed automatic transmission used in Super Duty trucks and commonly mated to the 7.3L Godzilla and other heavy-duty engines. For swaps, confirm torque capacity, flexplate compatibility, torque converter selection, and the bellhousing/adapter requirements for older frames.
Verified spec fields (fill from official sources)¶
- Model: 6R140
- Type: 6-speed automatic (hydraulic/planetary)
- Max rated torque (factory): ___ lb-ft (verify)
- Gear ratios: (provide 1st..6th ratios)
- 1st: ___
- 2nd: ___
- 3rd: ___
- 4th: ___
- 5th: ___
- 6th: ___
- Final drive / output spline: (specify output spline count and flange)
- Weight: ___ lb / ___ kg
- Fluid type & capacity: ___ (factory spec)
- Starter/torque converter bolt pattern: ___ (confirm for adapter)
- Notes on control: Typically requires transmission control module (TCM) integration; modern vehicles use CAN. For swap projects, ensure ECU / TCM or standalone controller compatibility.
Integration & swap notes¶
- Flexplate & torque converter: Select converter that matches engine torque and transmission torque capacity. Flexplate must match engine bolt pattern.
- Bellhousing / adapter: Older frames/transmissions may require adapter plates or custom bellhousing to fit the 6R140 to the Godzilla engine.
- TCM / software: For full functionality (downshift logic, lockup), integrate TCM or run a compatible aftermarket controller.
- Cooling & lines: Verify cooler, cooler lines, and torque converter cooling circuit.
Sources & exact queries¶
- Ford service / parts sites:
site:ford.com 6R140 specifications - ZF / Ford TSBs and service manuals:
6R140 gear ratios PDF - Technical articles / rebuild shops:
6R140 torque capacity - Transmission supplier docs:
6R140 torque converter compatibility