The Ford C6 is the heavy-duty 3-speed of the muscle/HD truck era. Bulletproof. Big-block reliable. Common in 7.3 IDI diesel trucks and Cobra Jet Mustangs. Pre-electronics simplicity makes the rebuild approachable.
Years
1966-1996
Maker
Ford
Ship Time
Same-day before 2pm ET
Common C6 Failures
| Symptom | Most Likely Fix |
|---|---|
| Slip in 1st | forward clutch pack |
| No 2nd gear | intermediate band adjustment or replacement |
| No 3rd gear | direct clutch pack |
| Pump leak | pump seal + bushing |
| Reverse slip | reverse clutch / direct drum |
C6 rebuilds are pure restoration market. Pricing $1,500-$2,500 retail for show-quality work. HD truck applications (7.3 IDI) command similar pricing for the bulletproof reputation.