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Bore sizes

This is a discussion on Bore sizes within the Internal Engine forums, part of the LSx Technical Help Section category; I have a castiron 5.3 block. Can it be bored to a 6.0 ? Thanks, ron...

  1. #1
    Junior Member CHEETAHRON's Avatar
    Join Date
    May 2011
    central Pa.

    1986 Monte Carlo SS

    Bore sizes

    I have a castiron 5.3 block.
    Can it be bored to a 6.0 ?


  2. #2
    Member izzhemp's Avatar
    Join Date
    May 2009
    Osawatomie KS

    1999 Pontiac Firebird

    Ya i think you can boreing it out 4.000 would give you 362 cubic inc leaving you with a 6.0 the aluminum blocks have thinner cylinder walls i don't think they can be bored out like the iron block with out doin major mods to the cylinder walls like re sleeveing them but Im not hundred percent sure on that just what i assume

  3. #3
    Junior Member mvinkler's Avatar
    Join Date
    Dec 2010
    Frederick MD

    2001 Camaro SS

    True, I found out after I bought mine that if you want cubes you need iron blocks. You are limited to a small bore amount without re-sleeving and stroking is the only other option.

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