Ok Im swapping out my 403 for something else because it blew. Please spare me the lectures on changing over to Poncho Power trust me I would love to change over but it will be easier to stay Oldsmobile and with lack of a parts car for the stuff to switch over everything I will just stay Olds. Anyway I have read posts of people switching from 403 to 455 olds but havent seen anything of switching over to 400, or 425 olds big blocks would the exact same problems show up as the 455 or will I need to watch out for other things also
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