430 overbore?

Discussion in 'Street/strip 400/430/455' started by Electra Dave, May 22, 2003.

  1. Electra Dave

    Electra Dave Active Member

    I'm having my 430 rebuilt, actually its almost done. The shop told me they went .060 over. I thought there was a problem going this far over on a 430. Is it a problem? This is a stock rebuild of a 67 430. Not to be raced or anything.

    Thanks,
    Dave
     
    Electra Dave, May 22, 2003
    #1
  2. Thumper (aka greatscat)

    Thumper (aka greatscat) Well-Known Member

    overbore

    Not to worry,I've done a couple at .060", yeilds a 440 but don't tell the mopar guys,never had a problem,even did one to a 455 bore once and raced it for years.
    gary
     
    Thumper (aka greatscat), May 22, 2003
    #2
  3. Electra Dave

    Electra Dave Active Member

    Re: overbore

    Thanks, you put my mind at ease.

    Dave
     
    Electra Dave, May 23, 2003
    #3
  4. ricknmel67

    ricknmel67 Well-Known Member

    Re: overbore

    Where did you find pistons? :shock:

    My first 455 was already .030 over when it decided to puke. (This was 10+ years ago) I was told I couldn't go any bigger on the bore, so I threw away the block.
    :ball:
     
    ricknmel67, May 23, 2003
    #4
  5. Thumper (aka greatscat)

    Thumper (aka greatscat) Well-Known Member

    pistons

    for the 455 race motor we obviously used forged race pistons,I believe we used hyperutectic for the 430 overbore.
    gary
     
    Thumper (aka greatscat), May 23, 2003
    #5

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