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  • Porting cylinder heads

    What are the pros and cons of doing this?

  • #2
    Pros = more power.... cons = kinda expensive if you aren't doing it yourself.

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    • #3
      pros: more power/torque, broader powerband, higher detonation threshold/less chance of detonation

      cons: time consuming process, cost, quality of port job
      2001 Arctic White Firebird<br />More mods than I\'m allowed to list!

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      • #4
        The cons are getting it done.
        \'85 Z28, T-tops new LG4 and TH700<br />\'85 3.4L 5-speed<br />mods: <a href=\"http://www.cardomain.com/id/oil_pan_4\" target=\"_blank\">http://www.cardomain.com/id/oil_pan_4</a> the nitrous exhaust O2 safety, pg 3. <br />Areo space materal engineer wantabe

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        • #5
          Dose anybody have an rough idea on the hp and torque gains at the rear

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          • #6
            probably not too substantial on a stock car...but they will help out alot more on a heavily modified car
            1994 white Firebird M5<br />Flowmasters, CAI, 3.73s, LSD, coated pacesetters, eibach pro-kit, bilsteins, hurst shifter, JVC stereo, 18\" C5 vette wheels, Kuhmo Ecsta ASX rubber<br /><br /> <a href=\"http://www.cardomain.com/memberpage/744299\" target=\"_blank\">http://www.cardomain.com/memberpage/744299</a> <br /><br />Coming Soon: Turbo!

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            • #7
              So basicaly a waste of time and money at this point.

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              • #8
                If you put a cam in with ported heads you will not have wasted you time.
                \'85 Z28, T-tops new LG4 and TH700<br />\'85 3.4L 5-speed<br />mods: <a href=\"http://www.cardomain.com/id/oil_pan_4\" target=\"_blank\">http://www.cardomain.com/id/oil_pan_4</a> the nitrous exhaust O2 safety, pg 3. <br />Areo space materal engineer wantabe

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                • #9
                  i picked up about 60-70hp from porting my heads, a cam, and LT headers, its WAY worth the time and money....
                  <b>Black</b> 1998 Pontiac <i>Firebird</i> A-4 swap<br />271.4rwhp/259.4rwtq NA<br />13.30@102.44 <br /><a href=\"http://www.freewebs.com/wickedsix98\" target=\"_blank\">www.freewebs.com/wickedsix98</a>

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                  • #10
                    Ok then I still have some much needded mods to do first then I will take it into consideration.

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