AUTOMATIC TRANSMISSION IDENTIFICATION
MERCURY
FoMoCo Three Speed Unit
Cast Iron Case 1
1962
Code Prefix
1963
Code Prefix
2, 3
2 Bar. carb, 3
4
3
3
4
4
1965
3
2 Bar. carb, 3
4
3
1964
3
4
1967
4
2 Bar. carb
1966
2 Bar. carb, 3
2 Bar. carb, 4
3, 5
4, 5
3, 6
4, 6
FoMoCo Two Speed Unit
7
1962
8
C6 Dual Range Automatic
9
1966
1967
3,6
2 Bar. carb, 3
4,6
2 Bar. carb, 3
4,5
3,5
3,5
3,6
3
4,5
4,6
4,6
4
3,6
1968
1969
2 Bar. carb
2 Bar. carb, 3
2 Bar. carb, 4
3
4 Bar. carb, 3
4 Bar. carb, 3
2 Bar. carb, 3
2 Bar. carb, 4
4 Bar. carb, 3
1970
1971
3
4
3, 10, 11
10
2 Bar. carb, 3
10
4 Bar. carb, 3
2 Bar. carb, 3
3, 10, 11
2 Bar. carb, 4
3, 10, 11
4 Bar. carb, 3
4 Bar. carb, 4
4 Bar. carb, 10
1972
1973
3
10, 11
3
3, 10, 11
10, 11
3
10, 11
3, 10, 11
3
3, 10, 11
1974
10, 11
CW & FMX Dual Range Automatic
12
1971
1972
1973
1974
Windsor
Cleveland
1- Prefix, suffix, service #, and serial # located on ID tag attached to right side of case.Also called Merc-O-Matic Three speed, or Mercury Multi-Drive, Cruiseomatic, Turbo-Drive
2- Dual Range Unit
3- Column shift
4- Floor shift
5- Single exhaust
6- Dual exhaust
7- Id tag attached to servo cover Also called Ford-0-Matic
8- With PCV Control
9- Prefix, suffix, service #, and serial # located on ID tag attached to servo cover
10- Fleet, Heavy duty
11- Police
12- 1969 Tag attached to oil pan with pan to case bolt 1970-74 lower right hand extension housing to case bolt
The transmission code decoder reveals the transmission type, engine displacement, plate location and configuration.