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Eighty Eight Includes the '97-'98 Regency and '96-'99 LSS Models
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Old 01-03-2011, 06:51 PM   #1
46u
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Upper intake (Plenum) question 97 88 LS

I got the old plastic upper intake (plenum) off my 1997 Olds eight eight. When I took it off the gasket and everything came off. No real problem but leaves me with a question. As most know the gasket is a thick plastic gasket that has a bead on each side. Going from front to back there are two plastic supports that hold a pipe. I am guessing one end is open to the cavity and the other end goes into the hole going to the PCV is this correct? I looked in my manual and did a search online but could not find anything that confirms this. Too muck to have to take the new one off later so please advise me.
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Old 01-04-2011, 04:04 PM   #2
maxwedge
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Re: Upper intake (Plenum) question 97 88 LS

Correct, while you are in there, remove the 2 inside corner lower int. bolts ans seal them with rtv, oil can migrate up these bolts.
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