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Now, there are a lot of heads that are very similar, within a digit that it could be also. Sometimes casting numbers are hard to read.
Could it be a C6AE-R? Or a C5AE-F? Are you sure they're cast iron? |
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Definitely C6?
Stick a magnet to it.... |
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Can you post a picture?
I think you actually have a C5AE-F head, which is a factory 427 medium riser head. |
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Can you email or text me a pic? 502.759.1431
It's a mystery as to whether or not that head actually exists. Most believe that the molds were worn out and it's actually a C5 cast number, which would make it a factory 427 MR head. If it is, then the chamber sizes on those were in the upper 80's, which would mean that you would need to find a replacement head similar to that size. The Pond heads would be the only ones that I could think of, otherwise your compression ratio would go sky high with an Edelbrock, BBM, Survival, etc. |
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Hurry up! The suspense is killing me!
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Got your email, yes it's a C5AE-F head. Factory 427 medium riser.
Now, for the kicker.... I won't be able to tell you exactly what you need until those come off. In factory form, the chamber sizes were supposed to have been 88-91cc. That means that only a Pond aluminum head would be a good substitute, in order to keep your compression ratio down. However.... The last 427 I built for Alan Carter, a forum member here, used those heads. After cleaning the decks up and a valve swap, they were at 73cc. You can never tell what's been done to a block, or to a pair of heads in the last 50 years. They may have been milled to death or they may be factory fresh. I think if you're ready to do a swap, I would suggest mothballing the car for the winter, then have your shop pull the heads and cc the chambers. That way, we can approach this as a methodical engine builder instead of throwing parts at it. |
Frank honesty and consummate professionalism once again from Brent. Credibility as a person and an engine builder is off the charts. Several thumbs up!
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Bummer! Oh well....back to watching The Curse of Oak Island!
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Thanks to everyone who took part in this discussion especially Brent you all have been very helpful. Now I know what I have and what direction I'm going.
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