LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Need help identifying passenger side intake manifold vacuum fittings

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Old Dec 23, 2003 | 12:14 PM
  #1  
Mullet Z28's Avatar
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From: Jekyll Island, GA
Need help identifying passenger side intake manifold vacuum fittings

I have an "extra" vacuum fitting on the passenger side of the intake manifold and can't figure out what it's for. What vaccuum hoses attach to the passenger side of the intake?
Old Dec 23, 2003 | 01:38 PM
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From what I can remember, there's one for your fuel pressure regulator, then one that provides the vacuum for your HVAC plenum inside your dash. That line disappears inside a wiring loom that is tucked toward the back of the engine. I think that should be it. I have a pretty shoddy picture of that here
Old Dec 23, 2003 | 02:30 PM
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Here's a pic from Shoebox's technical web page.

http://shbox.com/1/evap_sol.jpg

Hope this helps.

Jody J.
Old Dec 23, 2003 | 03:18 PM
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Mullet Z28's Avatar
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That helps a bunch. Thanks.
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