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Thread: minimum carb cfm for 350
          
   
   

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  1. 08-11-2006 12:22 AM #1
    vortec
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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)?
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  3. 08-11-2006 01:05 AM #2
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    viking
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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
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  4. 08-11-2006 06:32 AM #3
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    400 cfm for normal street use
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  5. 08-11-2006 07:11 AM #4
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    rumrumm
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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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  6. 08-11-2006 10:57 AM #5
    vortec
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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.
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  7. 08-11-2006 11:08 AM #6
    chevydrivin
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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+/-
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  8. 08-11-2006 11:08 AM #7
    chevydrivin
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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+/-
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  9. 08-11-2006 11:12 AM #8
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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.
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  10. 08-11-2006 11:12 AM #9
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    erik erikson
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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.
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  11. 08-11-2006 11:12 AM #10
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    erik erikson
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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.
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  12. 08-11-2006 11:13 AM #11
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    erik erikson
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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.
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  13. 08-11-2006 12:58 PM #12
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    erik erikson
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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.
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  14. 08-12-2006 08:16 AM #13
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    erik erikson
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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.
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  15. 08-12-2006 04:01 PM #14
    Rrumbler
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    What happened, there, Eric?? Got buck fever??
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  16. 08-12-2006 10:05 PM #15
    billlsbird
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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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