Blown BBC With 12° Heads Question

Discussion in 'PSI Superchargers Tech Questions' started by BEDNAR1320, Oct 28, 2016.

  1. BEDNAR1320

    BEDNAR1320 Member

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    Who has run this combo? Interested in opinions of how much timing to run, this will be a lower boost deal 18-22#. I am switching from a conventional headed engine to a 12° deal. With the conventional heads I found 28-30° worked well. Pretty sure that the smaller chambers will require less timing. CR is 11.7. Thanks in advance.
     
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  2. Andy C

    Andy C Member

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    24-25 timing max. We ran a screw with 55-58lbs of boost
     
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  3. BEDNAR1320

    BEDNAR1320 Member

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    12° heads?
     
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  4. Andy C

    Andy C Member

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    Profiler 12*
     
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  5. BEDNAR1320

    BEDNAR1320 Member

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    That's what I have, what block was that engine?
     
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  6. Bjs344

    Bjs344 Member

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    Sheridan is selling (or maybe already sold) his 12 degree out of your sister car. I think he was under 20 psi to run 3s with a baby blower. I saw a couple plugs once, it wasn't anywhere near on kill. He told me the timing number, mid 20s, but I don't recall the exact number.
     
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  7. BEDNAR1320

    BEDNAR1320 Member

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    I know the person that bought it, really well, LOL.

    And it's getting a high end 14-71 on it.
     
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