Please explain the difference, single plane vs. dual plane intake

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    Author Topic: Please explain the difference, single plane vs. dual plane intake  (Read 889 times)

    Offline Glennster

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    Please explain the difference, single plane vs. dual plane intake
    « on: March 28, 2009 - 08:10:15 PM »
    I hate to admit that I don't know the difference, but I don't................
    Please explain (maybe pictures?) the difference between the single and dual plane intakes.
    THANKS for the education!!!
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    wagesofsin

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    Re: Please explain the difference, single plane vs. dual plane intake
    « Reply #1 on: March 28, 2009 - 09:03:49 PM »
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    Offline Chryco Psycho

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    Re: Please explain the difference, single plane vs. dual plane intake
    « Reply #2 on: March 28, 2009 - 09:34:43 PM »
    Basically single plane is open plemun feeding all 8 cylinders from all 4 bbls , you can get away with a slightly smaller carb this way
    dual plane divides the carb in 1/2 & feeds only 4 cylinders from each side of the carb this theoretically improves low rpm response & drivability , this always requires a bigger carb to supply enough fuel @WOT as you cannot get some of the flow from both side of the carb
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    Challenger - You`ll wish You Hadn`t

    Offline Glennster

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    Re: Please explain the difference, single plane vs. dual plane intake
    « Reply #3 on: March 29, 2009 - 07:43:52 AM »
    good stuff guy, I think I've got it............
    For my application, the dual plane would be the way to go............
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    Offline Changin Gears

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    Re: Please explain the difference, single plane vs. dual plane intake
    « Reply #4 on: March 29, 2009 - 08:02:16 AM »
    Anyone have an idea as to why Chrysler made some 318 2bbl as dual plane and some single plane (other than $$$)?  Surly it wasn’t a high RPM screamer.  You would think it would dual all the way, trying to get the best drivability out of it.

    Don't hate me for it, but I have a Chevy 4.3 2bbl in my boat (single plane).  Was looking at replacing it with a 4bbl. The Edelbrock performer is advertised as a dual plane, but it is a single.  The 4.3's firing order is 165432.  It is even fire "bank to bank", it does not need to be dual plane.  Just needs the plenum divider.
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    The goal never changes - Stop the 60' timer with your back tires

    Offline Glennster

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    Re: Please explain the difference, single plane vs. dual plane intake
    « Reply #5 on: March 29, 2009 - 12:27:06 PM »
    Hate you?
    How could anyone hate a guy that pulls a Purple Mopar Dragster with an old Rag Top?!?!??!?!?!?
    Thanks for the input>>>>>>>>>>
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    Offline femtnmax

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    Re: Please explain the difference, single plane vs. dual plane intake
    « Reply #6 on: March 29, 2009 - 09:38:31 PM »
    Quote from: Changin Gears on March 29, 2009 - 08:02:16 AM
    Anyone have an idea as to why Chrysler made some 318 2bbl as dual plane and some single plane (other than $$$)? 
    I wonder if it was a hood clearance issue.  Single plane could located the carb a little lower.
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    Phil
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