Original Message
Use the forum search to look up "transition".
By Dave Shoe - 05/27/2003 12:06:17 AM; IP 216.243.176.34
The C6AE-R heads is an "emissions transition" head, available in about 1/3 of FEs in 1966 and 1967 only. It was apparently distributed randomly, since a 352 pickup, 428 LTD, 390 -2V Fairlane, or 390 GT Mustang all stood an equal chance of getting the head.

The exhaust drill pattern was different for the Fairlane/Mustang, and this identifies your heads as Farilane/Mustang heads. They are most likely from a 390GT, but 390-2V and 390-4V (non GT) engines also got these same heads, though with a different valvetrain installed.

Here's a link that explains things a little better:

http://jcoconsulting.com/forumfe/reply.aspx?ID=12132&Reply=12116

Shoe.
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 cylinder head I.D. -- BarryMcLarty, 05/26/2003
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 1966-67 390GT heads N/M -- Royce Peterson, 05/26/2003
Collapse <a href=../ForumFE/reply.aspx?ID=17325&Reply=17320><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor17325" onclick="return false;">RE: 1966-67 390GT heads N/M</a>&nbsp;-- <font color=#0000ff>BarryMcLarty, <i>05/26/2003</i></font><script type="text/javascript">
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 RE: 1966-67 390GT heads N/M -- BarryMcLarty, 05/26/2003
Use the forum search to look up "transition". -- Dave Shoe, 05/27/2003
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