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  1. muscleman

    i need some engine advice

    Hi, i'm kinda new to workin with American muscle and need some advice. I have a 1974 duster with a 1972 340 engine. Is there anything i can do to it to give it the same performance of a 70-71 340 without adding any accessories to it? and if not , is it worth replacing it with the good ol' 70-71 340?
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