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Very little interchanges.You can make a hemi from the old 354 Chrysler poly block.The 318 poly I believe you cant.Rocky

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I thought the 354 Chrysler was a Hemi??

What about the spark plug tubes??Any interchange?

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What years for the 354 poly?

There was both a 354 Hemi and a 354 poly. You can make a hemi out of the poly.

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