The Difference Between the Ford C4 and C6

by Alexis WritingUpdated August 09, 2023

The transmission is one of the most vital parts of any car. The C4 and C6 were transmissions that were manufactured and used by the Ford Motor Company in certain vehicles. Similar in name, there are differences in the two transmissions that can be important if you are considering a transmission for your vehicle.


One of the major differences between the C4 transmission and the C6 transmission used by Ford was the amount of power that they could handle. The C4 transmission was primarily used in cars. The C6 transmission could handle more power. Due to the ability to handle more power, the C6 transmission was used in many Ford trucks with bigger engines, and in larger cars that were manufactured with bigger engines.

Years Made

Another big difference in the Ford C4 and C6 transmissions are the years that each transmission was used in the manufacture of Ford vehicles. The C4 transmission was first used by the Ford Motor Company in 1964. The C4 ceased being used in Ford vehicles in 1986. The C6 transmission was first used in 1966 and ceased being used in stock production in 1996. Therefore, If you have a Ford vehicle that was produced with a C-transmission either in 1964 or 1965, you can be sure that the transmission is a C4 model, while if it was produced after 1986, you can be sure it was manufactured with the C6 model transmission in it.

Duty Classification

Another one of the differences between the C4 and C6 transmissions is the size of the transmission. The C4 transmission was smaller and not able to handle a heavy load. Therefore, the Ford C4 transmission was classified as a medium-duty transmission. The Ford C6 transmission was larger and was classified as a heavy-duty transmission.

Modern Use

Both the C4 and C6 transmissions are still used in some instances. They are particularly used by drag racers and hot rod enthusiasts. The C6 transmission is also used by those who enjoy going off road with their trucks. Since the C4 was never used in trucks and was only used in cars, this particular transmission is not used in modern vehicles to go off road because it simply does not have enough power for this purpose.

More Articles

article divider