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Thread: Advantages of smallport mani on bigport.

  1. #1
    Senior Member --Redwork--'s Avatar
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    Default Advantages of smallport mani on bigport.


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    Was wondering if anyone here has tried running the small port mani on a bigport engine and wheather they had any decent results...

    Small port mani is much cleaner design and aparently flows better...
    Wish I had gotten a small port to start with

    Also anyone had good gains from running 20v quads.??

    I'd like to do that eventually but need more cash..

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    Veteran Clinton's Avatar
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    it wont do anything unless you run an aftermarket computer

    FTP.
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  • #3
    Senior Member --Redwork--'s Avatar
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    The question wasn't is it possable...

    It was "what are the gains" from doing this..
    And I have an after market ecu...

  • #4
    Oversized 86
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    the reasoning behind it is due to the larger CFM of a smallport manifold...it takes alot of work to get it done...

    there was a guy in the us that did a whole write up on it...

    jump on google and i reckon you would find it without to many problems

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    Veteran shift_rook's Avatar
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    with 20v quads you'll gain much better response, possibly get a couple of extra hp too

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    Senior Member --Redwork--'s Avatar
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    Yeah I already looked.. thats why I asked...

    Couldn't find squat....
    For some reason I found a lot of links selling adapter plates to put a bigport mani onto small port...???

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    Veteran shift_rook's Avatar
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    so you can then run a fatory rwd bigport manifold instead of having the worse looking cut and shut manifold

  • #8
    Oversized 86
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    the adapters are bigport mani onto a smallport because there is NO rwd smallport...

    so the adapters were made to make converting smallport easier

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