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If the heads aren't cracked or warped more than say .006 or so you can have them machined flat. Just don't go anymore than what it takes to get them flat. .010 and I don't think they'll work. Matt can give you the exact minimum height for the total head, but I don't know the measurement off the top of my head.
Thanks, but I knew that. We need new heads. Any sources?????
Give me a call at the number listed in my signature. If you are simply looking for new stock Ford heads; I can help you out there, and we've got a full line of custom options available for them too.
I wasn't too far off. I thought .010 was done, but Matt gave me a total height spec too, during one of those marathons. I just don't remember what it was.