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interchangable head
https://delcohacking.net/forums/viewtopic.php?f=34&t=870
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Author:  gt orphanage [ Thu Apr 15, 2010 8:29 am ]
Post subject:  interchangable head

Can anybody comfirm if a head off a 5 bearing engine will fit a 3 bearing block?

Author:  PR20 Auto [ Fri Apr 16, 2010 12:17 am ]
Post subject:  Re: interchangable head

I do know that a three bearing head will fit a five bearing block if you drill out the bolt holes (from 10mm to 12mm). I can't see why the opposite can't be true if you re-tap the block (from 10mm to 12mm).
(Some-one on this forum owns the auto sedan that has a three bearing head on it. I helped to do it. It also has one of my rear windows with it to replace the broken one it had on it when they bought it.)

Author:  PR20 Auto [ Fri Apr 16, 2010 12:21 am ]
Post subject:  Re: interchangable head

I just thought. You could also sleeve the bolt holes, but that would leave you with the skinny little 10mm three bearing head bolts.

Author:  gt orphanage [ Sat Apr 17, 2010 2:46 am ]
Post subject:  Re: interchangable head

thank you that helps me make the decesion at hand.

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