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  •  » 351w block/intake/heads questions

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    3/06/2021 10:42 PM  #1

    Nos681
    Senior 24-7 FYI Addict

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    From: Atlantic Mine, Michigan
    Registered: 7/14/2016
    Posts: 3,335

    351w block/intake/heads questions

    How can parts be listed for 69-97 for 351w’s when there are two different heights?
    Enough slop in bolt holes?
    Width at bottom of intake on the short side?

    16 early and 12 bolt later intakes made me think about this.
    Trying to better understand.

    Perhaps lack of knowledge of sellers/manufacturers?

    Last edited by Nos681 (3/06/2021 10:44 PM)

     

    3/07/2021 6:53 AM  #2

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,499

    Re: 351w block/intake/heads questions

    The deck height difference isn't that much.  The original height was 9.480, the later height was 9.503; that's only a 0.023" difference.  I imagine the intake gaskets are capable of absorbing the difference. 

    As for other differences, I would be careful with manufacturers claiming parts fit a 4 decade span.  This is common with other makes too.  Fit means a lot of different things.  I imagine any 351W head will physically bolt on to any 351W block, and if you have the right heads for the bolt pattern any intake will also work.  This is why you really need to do your research when buying parts for an engine. 

     

     

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