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Thread: gen 6 454 pistons in a mark 4 454 block and more Q's??

  1. #1

    gen 6 454 pistons in a mark 4 454 block and more Q's??

    i bought a set of gen 6 ho454 pistons 8.75:1 comp. and i'm just wondering if they'll work in a mark 4 block??? also anyone know how much lift they can take before fly-cutting the reliefs??? the cams i'm thinking of are doug herbert .685-.683 lift or crane .714-.714 lift blower cams and a set of canfield 350 heads any input on this combo will be apretiated i will be running an 871 blower on top... thanks again, Jim

  2. #2
    Senior Member MASTER BUILDER
    Join Date
    Dec 2005


    The pistons will work as long as the rod length and deck height is the same.

  3. Racing Junk

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