Not Ranked
Ok guys now that we have Keith and Barry in on this one can they please answer the original questions from a technical stand. From everything I have read over the years both here and elsewhere they can't be done. So unless things have changed please fill us in.
("Has anyone seen these ads and how can he do what he claims to 428 blocks. He also uses 2.25/1.75 valves on the 470ci block")
BTW the 470 is still a 428 block
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Cobrarich
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