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Thread: 454 build - what intake and cam ?
          
   
   

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  1. 04-12-2016 07:04 AM #11
    techinspector1's Avatar
    techinspector1
    techinspector1 is offline CHR Member
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    Quote Originally Posted by ceejay View Post
    I see Edelbrock says their performer RPM intake is for "Large oval port" heads.
    Mine are 781. I have searched online and see the 781 heads called "oval port" what do they mean by "large oval port" ?
    The Chevy production iron heads 049 and 781 are the "large oval port" heads they're talking about, as opposed to some of the "peanut port" production iron heads.
    http://www.grumpysperformance.com/heads2.jpg

    You guys who have a set of peanut port heads in the garage may want to reconsider selling them for scrap though, read this link for more info on making them work for a very stout street driver....
    http://garage.grumpysperformance.com...ck-combo.2900/

    .
    Last edited by techinspector1; 04-12-2016 at 07:14 AM.
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