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Thread: 5.3 359ci

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  1. #1
    Join Date
    Dec 2008
    Location
    Hugo, Ok
    Posts
    101
    whats most you can bore 5.3 out?

  2. #2
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    thats about it, safely. If you know a machine shop with a sonic bore tester they can measure the wall thickness of your block and get you the largest safe bore possible and then you can order custom pistons. Be prepared to pay over $1000 for them though.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

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