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Thread: 429 heads
          
   
   

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  1. 03-27-2009 11:11 AM #1
    wcm413
    wcm413 is offline CHR Member
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    Thanks , the cost would outweight the benefits I'm sure anyway .
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  2. 03-27-2009 02:43 PM #2
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    shawnlee28
    shawnlee28 is offline CHR Member
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    Bigger valves usually hurt the flow ,unless porting is also done.
    Its gunna take longer than u thought and its gunna cost more too(plan ahead!)
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  3. 03-27-2009 04:38 PM #3
    R Pope
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    The two-barrel 429's in Lincolns had those heads with flat-tops and had 8.5 comp., the four-barrel engines had pop-up pistons and 10.5 CR, so yours should be a little over 9:1.
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