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  • #1

    3.8 Bore, Cam...

    Does anyone know what's the stock bore size (of a 3.8) and how much the block can safely be bored over? Also, what are the stock cam specs? Thanks...

    Also (I forgot) how much can (safely) the heads be milled down and how much extra compression will this yield?

    [ April 21, 2002: Message edited by: Ak74 ]</p>
    I make a rich woman beg,<br />I\'ll make a good woman steal,<br />I\'ll make an old woman blush,<br />And make a young woman squeal...
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  • #2
    for engine/cam specs, look in the technical database on firebirdv6.com. you can grind the heads down as much as you want until piston/valve clearance becomes an issue. max "safe" bore is .02 over. some go .03, but doesn't give much of a safety margin.
    2001 Arctic White Firebird<br />T-Tops, 3.42 rear gear stock<br />Mods:K&N Air Filter,Whisper Air Induction Lid, maf screen removed, raised air box, Kumho Ecsta 712 255-50-ZR16 tires, BMR stb<br />Mods not installed yet: FTRA, SLP Lsd/Differential cover<br />Near Future Mods: HPP3, GMMG 3\" Exhaust , 1LE Swaybars, Transgo Shift Kit, MSD-DIS-4 w/ Accel Coil-Packs, Turquoise Blue Neon Underbody Kit, BMR Adj. LCA\'s, G2 Sfc\'s & V-braces, Pacesetter headers

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    • #3
      Ok, thanks.
      I make a rich woman beg,<br />I\'ll make a good woman steal,<br />I\'ll make an old woman blush,<br />And make a young woman squeal...

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      • #4
        and patrick knows this because hes actually bored a 3.8 .030 over or seen it done :rolleyes:

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        • #5
          Its not worth it to bore over our cars, IMHO. The little amount that you can safely bore just isnt worth all the money. I have heard of a .02 bored over motor, but not any more. After that you have to start worrying about hitting the coolant channels. I havent heard of anyone doing a .03 bore, and bored 3.8L are few and far between anyway.

          ~Brian
          NEW 2002 Onyx Black SS Camaro<br />M6, leather, T-tops, Hurst shifter<p>sold: 1999 Pewter V6 A4 Camaro

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