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Thread: iron 383 build

  1. #1
    Join Date
    Jan 2009
    Location
    michigan
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    43

    iron 383 build

    hey guys!
    trying to put my 383 together on paper and need some info.
    first off, what is the stock deck height for the 5.3?
    Last edited by mudseeker; 07-28-2009 at 02:29 PM.
    1986 rclb undergoing a 5.3 transplant

  2. #2
    Join Date
    Feb 2007
    Location
    Fort Worth
    Posts
    9,578
    From the centerline of the crank to deck face, it is 9.235-9.245 inches.

    Are you trying to build a 383 from a 5.3L block? You know that the largest you can bore a stock 5.3L block out to is 5.7L, right? Were you looking to put some tall deck heads on it to lengthen the stroke? Make sure to only have the block decked to make the mating surfaces true. Also, what rods and pistons you going with? How far out of the block do you anticipate for the piston to travel?

    2000 ECSB 6.0L
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  3. #3
    Join Date
    Jan 2009
    Location
    michigan
    Posts
    43
    yes, i know the max bore on the 5.3. i have been reading about this type of build on here and other sites for months.
    this is what i plan to use.
    K1-90003
    still early in the planning procces and haven't thought about the heads yet.
    1986 rclb undergoing a 5.3 transplant

  4. #4
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    yeah, 383 is possible due to 4" stroke and LS1 bore oversize 3.903 or whatever the LS1 oversize bore is. It may not be exact but its close.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  5. #5
    Join Date
    May 2008
    Posts
    315
    a 4 inch stroke and ls1 bore size will give you a 382. dont worry about the extra inch...

    I'm planning one for my next build..
    s10 with 4l60e and cammed 5.3 on the road!THREAD
    "People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf.".

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