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Thread: minimum carb cfm for 350
          
   
   

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  1. #1
    vortec is offline CHR Member Visit my Photo Gallery
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    minimum carb cfm for 350

     



    pretty self explanitory. how many cfm does it take to properly run a 350 (1982, currently with qjet)?

  2. #2
    viking's Avatar
    viking is offline CHR Member Visit my Photo Gallery
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    Proper for what, gas mileage, max hp, middle of the road or what, I've run rotten chester 2 jets, up the current twin 500 edel's on a tunnelram on 350's that were in proper tune (ie not running rich or lean), if your going for middle of the road I highly recommend the grant 625cfm road demon.
    Objects in the mirror are losing

  3. #3
    shine's Avatar
    shine is offline CHR Member Visit my Photo Gallery
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    400 cfm for normal street use

  4. #4
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    If you are running a stock or mild performance engine, an Edelbrock 600 would be a good choice.


    Lynn
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  5. #5
    vortec is offline CHR Member Visit my Photo Gallery
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    my original post wasn't all that self explanitory after all. i was in a hurry.

     



    anyway, the engine is pretty much stock. low-end torque is where i have my fun (rock crawling). it only sees high rpms in the mud. i can get a good deal on a 470cfm truck avenger, so the quadrajet might find a new home on top of a 396 in a 1970 chevelle, assuming the guy will budge on the price. it's a sweet car, IMO, even though it's not a true ss.

  6. #6
    chevydrivin is offline CHR Member Visit my Photo Gallery
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    Cfm=cidxrpmxve/3456

    476cfm=350x4700x1/3456

    Around 100 Cfm More For Every 1,000rpm Over Above Numbers
    600cfm.....6000rpm+/-
    700cfm.....7000rpm+/-

  7. #7
    chevydrivin is offline CHR Member Visit my Photo Gallery
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    Cfm=cidxrpmxve/3456

    476cfm=350x4700x1/3456

    Around 100 Cfm More For Every 1,000rpm Over Above Numbers
    600cfm.....6000rpm+/-
    700cfm.....7000rpm+/-

  8. #8
    erik erikson's Avatar
    erik erikson is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by vortec
    pretty self explanitory. how many cfm does it take to properly run a 350 (1982, currently with qjet)?
    CID X MAX. RPM THEN DIVIDE BY 3456.

  9. #9
    erik erikson's Avatar
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    Quote Originally Posted by vortec
    pretty self explanitory. how many cfm does it take to properly run a 350 (1982, currently with qjet)?
    CID X MAX. RPM THEN DIVIDE BY 3456.

  10. #10
    erik erikson's Avatar
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    Quote Originally Posted by vortec
    pretty self explanitory. how many cfm does it take to properly run a 350 (1982, currently with qjet)?
    CID X MAX. RPM THEN DIVIDE BY 3456.

  11. #11
    erik erikson's Avatar
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    Quote Originally Posted by vortec
    pretty self explanitory. how many cfm does it take to properly run a 350 (1982, currently with qjet)?
    Cubes x max. rpm divide by 3456.

  12. #12
    erik erikson's Avatar
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    Quote Originally Posted by vortec
    pretty self explanitory. how many cfm does it take to properly run a 350 (1982, currently with qjet)?
    cid x max. rpm's divide by 3456.

  13. #13
    erik erikson's Avatar
    erik erikson is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by vortec
    pretty self explanitory. how many cfm does it take to properly run a 350 (1982, currently with qjet)?
    cubes x max. rpm divide by 3456.

  14. #14
    Rrumbler is offline CHR Member Visit my Photo Gallery
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    What happened, there, Eric?? Got buck fever??

  15. #15
    billlsbird is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by erik erikson
    cubes x max. rpm divide by 3456.
    ....what about the 've'??? Or is it 'close enough' to just figure ve at 100%??? Bill

    ve = volumetric efficiency....
    Last edited by billlsbird; 08-12-2006 at 10:08 PM.

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