371 to 425 or 455 swap

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Old Mar 8, 2010 | 07:24 PM
  #1  
wildwillie1981's Avatar
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Joined: Jan 2010
Posts: 15
From: lockhart tx
Question 371 to 425 or 455 swap

well heres the update on my 60 88.... the engine is shot..lol.... its got freeze cracks on both sides, the size of texas.... so im thinking of swaping in a 425 or a 455 olds with turbo 400.....

so heres my question...
do they make a motor mount swap kit??... or do i need to fabricate everything???
also would like to hear from someone that has done this swap, for advice.... thanks for the help

Last edited by wildwillie1981; Mar 8, 2010 at 07:31 PM. Reason: messed up
Old Mar 9, 2010 | 05:25 AM
  #2  
Olds64's Avatar
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Joined: Jul 2007
Posts: 18,226
From: Edmond, OK
This swap has been done before. Check out this thread:

https://classicoldsmobile.com/forums...-starfire.html

FWIW, I think it would be worth it to swap in the 455 and TH 400. Especially if you have a bad engine.
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