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LS6 Vacuum Nipple Size

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Old Oct 21, 2013 | 03:01 PM
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armour's Avatar
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Default LS6 Vacuum Nipple Size

Does anyone know the size of the vacuum nipple for the brake booster on the LS6 manifold by the MAP sensor? I tried to put a 3/8 hose on it last weekend but it's larger than that. I have a 3/8 on my brake booster check valve so was hoping it was the same, it is not. I attached a pic for reference. Obviously, I'm speaking of the larger vacuum nipple. thanks
Attached Thumbnails LS6 Vacuum Nipple Size-ls6-20intake-20rear-20view.jpg  
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Old Oct 21, 2013 | 06:20 PM
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i r teh noobz's Avatar
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I believe its 1/2". I remember using some sort of heater hose adapter to hook to my 3/8 booster line.

A trick I've picked up for forcing a hose onto a slightly larger nipple is to thread a bolt into the hose, warm it with the heat gun until it gets soft, and then it will hold the flared shape once its cools down.
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Old Oct 21, 2013 | 06:55 PM
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I was thinking I saw somewhere it was 1/2", but it just looked so big when I compared the hoses at the parts store. Thanks for the reply!
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