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Thread: 3 Carbs, need id help

  1. #1
    bbehnen Guest

    Default 3 Carbs, need id help

    Just got 3 holley carbs my dad got awhile ago and never got around to using, I couldn't find any info on either of these. Im not sure how old these are either. If anyone knows about holley carbs or can help me id and find out which make and model they can fit with this info and pics, id really appreciate it. thanks.

    These on the # on the carbs

    1. # TR 6910 B

    2. # 6R-7880

    3. # 12R-9027B

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  2. #2
    rickyr Guest


    we need the LIST#
    a 6R or 12R or 34R # is just a casting #
    the list # is located on the top right corner of the choke tower on the first one
    and it will be on the throttle arm side of the main body of the other two
    it will start with the word LIST, the letter L, or the letter R
    but if it is a R it cannot have any #'s in front of it.
    Let me know what the LIST #'s are

  3. #3
    bbehnen Guest


    Thanks for the help ricky,
    Heres what I found;
    1. List # 81850 2400
    2. List # L 7320 1885
    3. List # 850ll 3265

  4. #4
    rickyr Guest


    list # 7320 is a model 4500 1150 cfm dominator
    the nearest I show to LIST # 81850 is 1850 and it is a model 4160 600 cfm vacuum sec
    and the nearest I show to LIST # 85011 is 80511 and it is a model 4150 830 cfm HP with annular boosters
    Re check your #'s and see if this matches up

  5. #5
    bbehnen Guest


    I've checked all the carbs again and all the list #s seem to check out.
    Now that I have these Model #s is that how I can find out which make and models each carb will fit?

    Thanks again Ricky.

  6. #6
    rickyr Guest


    these carbs are universal
    the 4160 and 4150 will work on anything with a square flange intake
    and the 4500 model will need a dominator intake
    and as far as CFM
    to size a carb you take cubic inch X max. RPM divided by 3456 and this will tell what size carb the engine needs

  7. #7
    bbehnen Guest


    thanks for all the help

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