Vortec Bowtie runner selection

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  • rsawyers9
    Member
    • Mar 2009
    • 39

    #1

    Vortec Bowtie runner selection

    Running in an emod class for next year. Thinking of trying the vortec bowtie heads but unsure of runner size to choose.
    355 w/ small dome
    15 in. vacuum rule
    4412 willy's
    edelbrock 2814
    2500 lbs
    would like to turn 7000-7300 rpm

    So which heads should I be looking at? The 185cc or 225cc head? My gut is telling me to go with the 185cc for the throttle response, but will they give up higher rpm?
  • 50j
    Senior Member
    • Jun 2007
    • 1047

    #2
    The 4412 will run out of breath before the 185 cc head.

    Comment

    • perfconn
      Senior Member
      • May 2007
      • 3573

      #3
      I have a set of the large ports for sale but you don't need them with a 4412 rule engine.

      Comment

      • stockcar5
        Senior Member
        • May 2007
        • 1289

        #4
        The 185 runners are the ones you want. I've got a set for sale done by Brzezinski.

        Comment

        • hogracer3d
          Senior Member
          • Sep 2007
          • 511

          #5
          small ports are good to 540 hp, and with a vacuum rule cam and a 4412, you wont get close to that

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