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Thread: Blow thru carburetor

  1. #1
    Junior SCH Member
    Join Date
    Jan 2010
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    3

    Blow thru carburetor

    I have a 69 camaro with a GM PP HO454 stock. It is about 425 HP at sea level.
    I added a Intercooler and Procharger D1-SC. Need recommendations on a carburetor with good drivability, cruising?
    1969 Camaro, Procharged D1SC HO 454, 700R4, Retrotek Speed EFI, Air Ride suspension, MSD ignition, Yukon axles and gears 3:73, 12 bolt.

  2. #2
    Junior SCH Member
    Join Date
    Jan 2011
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    4
    Depending what your primary use will be, you could probably do OK with just modifying what you have now. I did buy a QFT blow thru carb (750 cfm) a few months ago (for my 350 w/P1SC and 430hp NA) and haven't had a chance to run it thru its paces but so far it seems to be set up very good right out of the box. I would definetly buy from QFT again.

  3. #3
    Junior SCH Member
    Join Date
    Mar 2011
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    1
    I ran a 650 holly on a 302 . With 67 front and 98 rear jets. Vented the fuel bowls to the top of carb and drilled the shafts to match base plate . It had a tube to the blower outlet. This was in 1983 I'm sure it has been improved on somewhat. But ran good and did ok on milage.

  4. #4
    Junior SCH Member
    Join Date
    Jan 2011
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    4
    This is the mod most of the guys are using to convert their present carb to a blow thru setup.
    http://www.hangar18fabrication.com/blowthru.html

    I have two freinds that had done the mods & theirs came out ok....
    If you're going to stay below 10 punds of boost, seems like these mods will support your setup.

  5. #5
    Junior SCH Member SScott's Avatar
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    Jul 2010
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    Alabama
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    ^ That is an awesome write up. Here is a pdf of it that is a little easier to print: http://mypinksecretary.com/holley%20...0how-to(0).pdf

    There is a word doc somewhere with all the pictures in place.
    "The older I get, the more I realize how little I knew when I knew it all."

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