Re: [Amc-list] 4.0 head swap

[Doug Dornbos <dornbos@xxxxxxxxxxx>]

Thanks! That is EXACTLY what I need to do, put a 4.0 head on a '73 
block. do you remember if the head bolt size needed to be changed?
Thanks again.
Doug

Message: 6
Date: Sat, 24 Mar 2007 00:20:25 -0700
From: adm@xxxxxxxxxxxx
Subject: [Amc-list] 4.0 head swap
To: amc-list@xxxxxxxxxxxx
Message-ID:
	<20070324002025.f85a9afa4f61cda1b65d72d6118f2fe2.f9b137da07.wbe@xxxxxxxxxxxxxxxxxxxxxx>
	
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My reply may be very late and not terribly helpful, but for what it's
worth...


I did fill-in the extra water jackets on my 4.0 H.O. head for use 1973
block.  It did not cost much, and it has not caused any problems.  I do
not remeber if it was absolutly neccessary or not.



Date: Thursday, March 22, 2007 09:35 AM
From: andrew hay <adh@xxxxxxxxxxxxxxxxx>

" From: Wayne E LaMothe <superglider@xxxxxxxx>
"
"
" Couple of questions for those in the know.  I know the 4.0 head will
bolt
" onto the 258. (Will it also bolt on the 232?)  I might have to close
off
" some water ports but it is a pretty common swap.  Is there a 4.0 head
" casting that does not need the water ports sealed (maybe a RENIX head)
or
" is it more to do with the 258 block?

i don't recall if anyone answered these questions.

4.0 valve gear and head bolts are in the same place as any 199/232/258,
and the bolts are 1/2" like all but the '81-6 258s.

the water port thing is more to do with the block; they made both 4.0
and 258 a little wider on one side in '87.

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