Ford C4 transmission

C4/C5

C4 was used 1965-80 and C5 was used 1981-86 in many Ford products. The C5 had a lockup torque converter and should NOT to be confused with the C4 with the dipstick tube fastened to the pan which many people called a C5 when in fact it was just another version of the C4. Ford also made a fully manual version that they called a Semi-automatic or C4S and used it in some four cylinder Falcons.

All three were hydraulically controlled rear wheel drive transmissions.

Rear cooler line is the cooler return line.

Band adjustments:
Intermediate = 1½ turns (coarse thread) C4
Intermediate = 3½ turns (fine thread) C5
Reverse = 2 turns

Gear Ratios:
2.46:1 1st gear
1.46:1 2nd gear
1.00:1 3rd gear
2.18:1 reverse