intake plenum? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


General GM Chat When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made. Chat about all things GM (and related cars). Off-topic stuff should be in the Lounge, and all Model specific mechanical problems should be posted in the proper forum.

Reply
 
 
 
Thread Tools Search this Thread
Old 11-23-2004, 02:17 PM   #1
Junior Member
Thread Starter
 
Join Date: Nov 2004
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
bluefever is on a distinguished road
Default intake plenum?

what years was the plastic intake plenum used on the bonny,i'm considering buying one,but my parents '98 se had a plastic intake plenum,with only 80,000 on it,the plenum melted,the engine started chugging coolant,wouldn't run worth crap,took it to a radiator shop,cost over 800 till the morone'* finally found out what the real problem is,anyways,which years was it on,and can you interchange a newer or older design like a cast iron or aluminum one?
bluefever is offline   Reply With Quote
Old 11-23-2004, 02:35 PM   #2
Senior Member
True Car Nut
 
95naSTA's Avatar
 
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Thanks: 0
Thanked 0 Times in 0 Posts
95naSTA is on a distinguished road
Default

with the series one, i think that the 92'* were metal and 93-94 were plastic? Someone chime in on that one. All series 2 L36 engines 95+ use a plastic upper intake. But there is a L27 uppermanifold (off the series3) which is aluminum and will bolt up to the lower intake manifold on a L36 but the throttlebody needs an adaptor and i think there are some other things to make this work.
95naSTA is offline   Reply With Quote
Old 11-23-2004, 02:55 PM   #3
Senior Member
Certified Car Nut
 
Join Date: Jun 2003
Posts: 15,928
Thanks: 0
Thanked 0 Times in 0 Posts
BonneMeMN is on a distinguished road
Default

The Series 1 (L27) had a Metal manifold for half a year (1992).
Series 1 (L27) had plastic manifold from 1992.5-1994 There aren't any common issues with this one
Series 2 (L36) had a plastic manifold from 95-Current, these are the bad ones.
Series 2 (L36) should be ok after 2000, supposedly the design was modified.
Series 3 (L26) has a Metal Upper manifold.

Series III is a direct bolt in, except for a throttle adaptor. The 00+ designs are just starting to come around to the milage where the originals would fail, so the metal one isn't a bad idea. It'* also much easier to modify for performance, since it'* metal and not a composite plastic.
BonneMeMN is offline   Reply With Quote
Old 11-23-2004, 08:14 PM   #4
Junior Member
Thread Starter
 
Join Date: Nov 2004
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
bluefever is on a distinguished road
Default

do the supercharges bonny'* have a different plenum or are they both the same?
bluefever is offline   Reply With Quote
Old 11-23-2004, 08:32 PM   #5
Junior Member
 
Join Date: Mar 2003
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
vital49 is on a distinguished road
Default

Quote:
Originally Posted by bluefever
do the supercharges bonny'* have a different plenum or are they both the same?
Yes, they do! ...it'* a supercharger!
vital49 is offline   Reply With Quote
Old 11-23-2004, 08:39 PM   #6
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Translation:

Supercharged Bonnevilles don't have a plastic upper intake. The SC replaces it, and therefore it has no problems as the upper plastic plenums do.
willwren is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Modified/improved Intake manifold/plenum kit 98PA Oldsmobile 8 06-21-2006 08:58 PM
Plastic Intake plenum... Request for opinions 1997 SE jmandeville 1992-1999 35 01-27-2006 07:47 PM
Is it hard to remove the upper intake plenum ? Performance, Brainstorming & Tuning 10 09-28-2005 12:12 PM
Intake Upper Plenum Manifold replacement found glorkar General GM Chat 7 04-05-2004 12:25 AM
upper intake plenum 95 and on.. Custom88 General GM Chat 28 01-07-2003 06:52 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 04:50 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.