Re: [Amc-list] 4.0 head swap

["Swygert, Francis G MSgt 436 CES/CECM" <Francis.Swygert3@xxxxxxxxxxxx>]

Date: Wednesday, March 14, 2007 01:34 PM
From: Glenn Ford <gcmford@xxxxxxxxxxxxxxxxxxx>

Hi, Frank

It's the first time I have seen you positive about the 87-90 258 blocks
being wider. I hope you are right. Up until now, you sounded hopeful, as
if
uncertain.
<snip>
If somebody can do a direct comparison with pictures and measurements,
like bare Renix block and head, or a 87-90 258 block, verified, with
wider measurement, then we could confirm or dispel the rumor.
---------------------

Well Glen, I've heard it enough from a few guys on the Stroker's list
that I'm apt to believe it unless/until proven otherwise. I wouldn't put
a 4.0L head on a 258 without checking no matter what year the block was.
That should be SOP for any builder -- double check everything! 

There may be matching ports in the block, I don't remember, but the head
gasket has no holes where the ports are. If the ports match it's just
coincidence -- they are there to wash casting sand out. 
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