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Technical 392 overbore

Discussion in 'Traditional Hot Rods' started by 3w Hank, Oct 3, 2025 at 5:39 PM.

  1. 3w Hank
    Joined: Jan 29, 2022
    Posts: 924

    3w Hank
    Member

    On the early Hemi 392, what max bore should of experiance be done.
    Shore just a hone and custom pistons is best but now its 2025 and one find what one find.
    This is a nice block but caps is missing ( for me no problem ) and cylinders is nice but its 060 over.
    Price is not low but decent.
    -How to see this case ?
     
  2. patsurf
    Joined: Jan 18, 2018
    Posts: 2,419

    patsurf

    sleeve it and start brand new!
     
  3. gene-koning
    Joined: Oct 28, 2016
    Posts: 5,565

    gene-koning
    Member

    With it being .060 over already, I think I would spring for the cost of a sonic test to determine if there is any core shift, and find out exactly how much meat is left in the block. How much more over bore does it need? Finding the correct bore oversized pistons for that Hemi could be the limiting factor, I think I would start there.

    Having it sleeved it back to the standard bore could be a great idea. Could get costly (would save the cost of a sonic test), but that could solve a lot of problems.
     

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