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Thread: What do I have ? Help

  1. #1

    Default What do I have ? Help

    My Holley say it's a 80508-9 (which for some reason I can't find), which would indicate that I have 4160. But it would appear that my floats are the style that have the V on the front, which doesn't match up to 4160. Would a standard 4160 rebuild kit work for me? It's on a '91 GM school bus with a 366 BBC. I'm rebuilding because I think I have some sediment in there, and honestly not sure what the condition inside is. I'm also having flooding issues. Thank you for the help.

  2. #2
    Join Date
    Jan 2010
    Brisbane, Australia


    You have a 4160 750 vacuum secondary, but not listed on the Holley list numbers.
    What is the number under the list number on the choke tower?
    A 4160 runs generally runs brass primary, and nitrophyl secondary floats.
    The nitrophyl has a slightly shorter length to clear the secondary metering plate.
    The rest of a 4160 kit is suitable for your carb. Gary
    Regards, Gary

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