300M, Concorde, LHS, New Yorker Discuss the Chrysler LH platform cars within.

Cast iron block 3.5 swap for 3.5 HO

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Old 09-03-2015, 06:54 PM
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Default Cast iron block 3.5 swap for 3.5 HO

My 01 300M has a bad top end engine noise / rattle. Can't locate a reasonably priced aluminum block HO, but have been told that the cast iron block, non-interference pre 98 3.5, will bolt up, but will not run with 01 electronics. Is this correct, or is there a way to make it work?
I would like to keep my 300M going, even if it's with a little less HP.
 
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