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what kind of psi are you setting your boost referenced power vavles on ls

Discussion in 'Carburetor + Boost Tech Questions' started by joes69, Apr 13, 2021.

  1. joes69

    Joined:
    Jul 23, 2013
    what kind of pressure are you setting your boost referenced power valves on a e85 ls engine.I have a cam only 5.3 with twin 63s and was wondering what kind of pressure you guys are looking at on your boost referenced power valves.I have both front and rear boost referenced power valve.Its a e85 csu and im hitting 20-22 psi.Do you set the valves alittle higher like 7-10 on the front so you can keep it leaner to help with boost etc.Just curious what you guys are trying and thanks in advance
     
    joes69, Apr 13, 2021
    #1

  2. Flat tire

    Joined:
    Mar 28, 2021
    Got this reply from them yesterday..



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    Flat tire, Apr 13, 2021
    #2

  3. joes69

    Joined:
    Jul 23, 2013
    thanks so much.Whos carb did you go with and is it on a ls style engine.I ran the carb on a bbc and the bbc didnt care but for some reason im guessing its so small the ls is more finicky
     
    joes69, Apr 14, 2021
    #3

  4. Flat tire

    Joined:
    Mar 28, 2021
    Bought a new 750 main body, used blocks and bowls from another carb.

    tell me what size air bleeds come in a CSU blow thru?

    i had a lean issue till i put theses wires in the .028 high speed bleeds..
    then went 9.0 rich AFR


    Screen Shot 2021-04-12 at 3.44.14 PM.png #ad


    IMG_1680.jpg #ad
     
    Flat tire, Apr 14, 2021
    #4
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