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Old 10-21-2007, 12:04 PM
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diametricalbenz diametricalbenz is offline
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Join Date: Oct 2004
Location: Marietta, GA
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Quote:
Originally Posted by Larry Delor View Post
I'm wondering if those heads would work on a 4.2 liter.
In theory they could....I don't have an EPC to cross reference that. If the bore is the same and only the stroke is varied it would work...

Do you know the part number for the S420 heads?
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