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Thread: 5.3 cylinder wall thickness

  1. #11
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    the aluminum block 6L engines are like that. The iron blocks can easily be bored +.030"
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  2. #12
    Join Date
    Jan 2009
    Location
    michigan
    Posts
    43
    went to the machine shop today, the sonic test showed an average of .220 on the thrust sides.
    1986 rclb undergoing a 5.3 transplant

  3. #13
    Join Date
    Apr 2009
    Location
    Evant,tx
    Posts
    305
    how much nitrous can the walls handle if it was a 3.898 bore

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