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Vortec Head Modification/Upgrade

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  • #91
    I would think the valve open spec. would be more important. If there isn't enough pressure on the seat at high rpm's ,the valves will float.
    1999 Powerquest 260 legend
    502 mpi
    B1

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    • #92
      Both heads installed and valves adjusted. Installed Intake, dist and (1) exhaust manifold this w/e.......should be ready to start when the weather allows........no more freezing temps!
      '84 Grady White Offshore
      350 Mag w/ Vortec Heads
      Alpha 1 Drive

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      • #93
        Ahh winter is counting down...gonna be 50* on LI today....saw buds on the trees....went down to Robert Moses to get our 4x4 permits...you're almost there Tony....
        1988 Four Winns 200 Horizon
        4.3 OMC Cobra

        98 Jeep Grand Cherokee 4.0 Selectrac
        07 Jeep Grand Cherokee Limited 5.7 Quadradrive II

        "While air doesn't freeze....rust never sleeps"

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        • #94
          That pic looks like the Sore Thumb!
          '84 Grady White Offshore
          350 Mag w/ Vortec Heads
          Alpha 1 Drive

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          • #95
            Sign up today
            It is! My favorite 4x4 place here. Lots of variety there...
            1988 Four Winns 200 Horizon
            4.3 OMC Cobra

            98 Jeep Grand Cherokee 4.0 Selectrac
            07 Jeep Grand Cherokee Limited 5.7 Quadradrive II

            "While air doesn't freeze....rust never sleeps"

            Comment

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