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Ford cylinder head casting numbers

170 CID (2.8L)
1964-65   C4DE-6090-D   C5DE-6090-A,B
1966-67   C6DE-6090-B   C7DE-6090-A
1968-69   C8DE-6090-B   C9DE-6090-C,D,J,L,R
1970-72   DODE-6090-A

200 CID (3.3L)
1963-65   C3DE-6090-D   C5DE-6090-A 
1966-67   C6DE-6090-B   C7DE-6090-A
1968-69   C8DE-6090-B   C9DE-6090-C,D,J,L,R
1969-74   C9DE-6090-M   D3DE-6090-A*
1975-76   D5DE-6090-BA
1977-79   D7BE-6090-AB   D8BE-6090-BA**
1980-83   EOBE-6090-BB   E1BE-6090-CC**

240 CID (3.9L)
1965-71   C5AE-6090-A,C   C6AE-6090-A,C   C8AE-6090-D
1972-74   D2AE-6090-AA

250 CID (4.1L)
1969-74   C9DE-6090-M   D3DE-6090-AA
*
1975-76   D5DE-6090-BA
1977-79   D7BE-6090-AB   D8BE-6090-BA**

*
Note: 1969 and later heads were the same on the 200 and 250
** Note: 1977-83 heads have 1.76" intake valves and hardened valve seats for unleaded fuel