what is this head from
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Postmaster
Joined: Jun 2003
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From: shepherd
what is this head from
well i could have put money on it that i had E7 heads. i thought i saw the casting number before i took them to the machine shop. well today i took my heads off and i got E9SE. is this an 89 of some car. the engine and heads i used were on a 90 or 91 f150. it was my truck that i drove and it was in the family since it was new so i am pretty sure this was the original motor and heads. maybe they got mixed up at the machine shop. anyway it is too late to swap them back now.(over 1 year ago). what are the flow numbers of these heads and what are the CC sizes. this may be the reason i have the low compression numbers. are these crappier than E7 heads
Post Fiend
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From: Bonita Springs FL
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Exactly, the E tells you that its in the 1980's, the 9 tells you it was exactly 1989 when they were produced, and the other two are models. If those spec. are right, then its a tbird head.
Most likely a mix up at the m-shop. The difference betwenn E7 and E9 heads, if I understand what your asking, is simply year made. The heads on the tbird and truck should be the same. If you have low compression, I would suspect rings first. Or its a bad vavle job. Bad seals, poor seat grinding etc.
Good luck but I don't think it being an 89 verses 87 head makes a difference.
Most likely a mix up at the m-shop. The difference betwenn E7 and E9 heads, if I understand what your asking, is simply year made. The heads on the tbird and truck should be the same. If you have low compression, I would suspect rings first. Or its a bad vavle job. Bad seals, poor seat grinding etc.
Good luck but I don't think it being an 89 verses 87 head makes a difference.
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Postmaster
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From: shepherd
well i built the motor a little over 1 year ago, all of the cylinders have consistant compression numbers just they are all around 145 psi. i used the block and heads from my 90 f150 so i don't know why i have these.
