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  • scott24jsb's Avatar
    01-24-2020, 03:00 PM
    Good evening, I have a stock (Far as I know) 455. I would like to upgrade cam. Nothing to radical. So my first question is what size lift is stock in marine motor? .474??? If so could I go to .510 without piston interference? And second I have a set of roller rockers that id like to use. When I remove the stock rocker bolts can I directly replace with rocker studs or will I need machine work. I plan on upgrading push rods and installing guide plates at that time. Thank you for any help and info. (I have built a few sbc chevys but this is my first olds).
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