On most carbs there are a couple of nipples here and there to hook up vaccum lines to, I have never owned a Holley so I don't know about them.
Someone with the answer will be along shortly I'm sure.
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Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke.
1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
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