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As far as C7ZE heads, I believe there were very few castings of them. I am not so sure there are any March or April 67 castings. I have only seen an early to mid Dec 66 ,6M22, 7B3, another Feb 67 date that I can't remember and 7E8 and 7E11. They must have made a lot of the December dated ones as I have seen them on relatively later production 67 K codes i.e. 67 Shelby's with serial #'s up to the low 2000's. There are also a lot of 7E11's floating around. Too bad they are too late for a lot of cars. The latest dates I have seen for a set of C7ZE heads are 7E11. I just sold a set actually. I think any later castings would become C8ZE heads as I have seen those with dates not too far after the 7E11's.Not sure if this helps, but I have had a few of these heads in the past and currently have some for my Shelby (not extra). They are very hard to find.
Jon<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana" size=2 id=quote>
My car was "actually built" on May 4, 1967. I have a block dated April 18th (7D18), and C7ZE non-thermactor heads (with the extra material but no holes) both dated February 3rd (7B3).
I was thinking that these heads were cast too early for my car's build date (based on advice from another thread on this ekschange board), but maybe I'm ok.
What do you think?
Thanks