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Thread: No List Number

  1. #1

    Default No List Number

    I just bought what I'm told is a 600 Holley, but it has no list number on the choke horn or anywhere visible. Would it have one somewhere if I pulled it apart? It looks like a vacuum secondary 4160 (only primary metering block), but with fuel bowls off a 4150. It was only on a 253" V8 for a few days, but was too large so replaced with smaller carburetor. So is a fairly new carb. Do they still have list numbers on the choke horn on new Holleys?

  2. #2


    It could be a Chinese copy. They have little or no identifying numbers. Post pic or link so we can see an image. They tell a thousand or so words.

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