The Ford C6 transmission was a heavy-duty automatic transmission built by Ford Motor Company between 1966 and 1996.
The C6 transmission is very popular in the sport of drag racing today, with units equipped with manual valve bodies and transbrakes. It is also widely used in off-road applications due to its reputation of being nearly indestructible.
The C6 was used in trucks and cars with larger engines. Five different bell housing varieties exist for use with various Ford engine families:
The Windsor pattern was used on the 300 I6, the Ford Windsor engines and the 351 Cleveland.
The 460 pattern was used on the 351M and 400 and all of the Ford "385" engines.
The FE pattern was used on the FE engines
The rare 66 - 68 Lincoln MEL 462 pattern which was used on 66 - 68 Lincoln Continentals with the 462 engine and also on 68 - 69 Lincoln Continentals with the 460. This pattern rounds off on the passenger side to clear the heat/AC box on the 66 - 69 Lincoln firewall.
Diesel pattern. This was similar to the FE/"385" pattern but the two are not interchangeable.