03-23-2008, 12:22 PM
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#1
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GX Member
Join Date: Mar 2007
Location: Cincinnati, OH
Posts: 113
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HO manifold? Doesn't look like it...
http://cgi.ebay.com/ebaymotors/2-3-L...em230233050618
Uhhhhhhh this auction says it is a HO intake manifold... This does NOT look like any HO manifold I have ever seen for this engine. Any thoughts?
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03-23-2008, 12:29 PM
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#2
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GX Member
Join Date: Oct 2004
Posts: 59
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i believe they made some tubular style manifolds like early on. before they went with the design most of us usually find. cant remember right off hand.
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03-23-2008, 12:32 PM
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#3
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636 whp
Join Date: Aug 2006
Location: AZ
Posts: 11,882
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it's the very rare one
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03-23-2008, 12:33 PM
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#4
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Captain Funpark
Join Date: Jan 2006
Location: Vincennes, IN
Posts: 7,034
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and for $10 + shipping, you can own one!!!
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03-23-2008, 10:42 PM
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#5
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Boost Guru
Join Date: Mar 2004
Location: Buffalo, NY
Posts: 1,837
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I think they made those for the older HO engines, then switched to the large plenum design most of us are used to seeing.
If you're looking to swap, I'd advise to keep the stock manifold. Unless your boosted, all the HO manifold will do on a nearly stock engine is help it lose power - dyno proven.
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03-23-2008, 11:45 PM
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#6
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Moderator
Join Date: Nov 2004
Location: Long Grove, IL
Posts: 5,002
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That manifold is original design Quad4 manifold. Used in like 87-89
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Cliff Scott
2004 Alero GX w/sport pkg - Sold, living somewhere in WI now.
2011 Saab 9-5 Turbo4 M6
2004 Corvette Convertible M6
1994 Chevy Beretta - Quad4/M5
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03-24-2008, 03:41 PM
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#7
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GL Member
Join Date: Oct 2007
Location: southeastern NC
Posts: 455
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***
Quoted from the page ...
Quote:
This is off a HO 2.3 L Quad 4 its dirty but good, can be used to the best of my knowledge on any GM 2.3 single or double cam motor. It will not fit a 2.4
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While it might be made to fit the 2.4 engine, as others have stated, it will not help.
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03-25-2008, 12:41 AM
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#8
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Moderator
Join Date: Nov 2004
Location: Long Grove, IL
Posts: 5,002
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But it's still not a HO manifold. That is pre-HO.
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Cliff Scott
2004 Alero GX w/sport pkg - Sold, living somewhere in WI now.
2011 Saab 9-5 Turbo4 M6
2004 Corvette Convertible M6
1994 Chevy Beretta - Quad4/M5
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03-28-2008, 10:03 PM
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#9
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GX Member
Join Date: Mar 2007
Location: Cincinnati, OH
Posts: 113
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Quote:
Originally Posted by Cliff8928
But it's still not a HO manifold. That is pre-HO.
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Hmm... What is it that makes an intake manifold HO, if not the fact that it came from a HO engine?
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03-29-2008, 01:27 AM
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#10
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Moderator
Join Date: Nov 2004
Location: Long Grove, IL
Posts: 5,002
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It has a larger plenum area than the standard output manifold. The original Quad4 manifold (in that link) had individual runners.
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Cliff Scott
2004 Alero GX w/sport pkg - Sold, living somewhere in WI now.
2011 Saab 9-5 Turbo4 M6
2004 Corvette Convertible M6
1994 Chevy Beretta - Quad4/M5
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03-29-2008, 08:11 PM
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#11
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Boost Guru
Join Date: Mar 2004
Location: Buffalo, NY
Posts: 1,837
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Quote:
Originally Posted by RoetherB
Hmm... What is it that makes an intake manifold HO, if not the fact that it came from a HO engine?
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The manifold itself does not make anything "High Output". It's the fact that it came on the 2.3L Quad 4 High Output engines which is why it's referred to as the HO intake manifold. On a stock or lightly modified 2.4, the HO manifold makes the engine lose power.
Quad 4 High Output manifold. The non-High Output Quad 4 engine's manifold looked similar, but had a smaller plenum.
Original Quad 4 manifold
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Last edited by Spilner521 : 03-29-2008 at 08:14 PM.
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04-13-2008, 05:10 PM
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#12
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GL Member
Join Date: Jan 2007
Location: las vegas
Posts: 578
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the tubular piece of nonsense in the ebay auction was as stated an early quad 4 intake manifold. This was the design before they went to the intake manifolds we all recognize. Basically this thing is a relic of the late 1980's. It looked cool, but that's about it.
From what I understand this was only found on regular quad 4's, not the highoutput models.
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04-17-2008, 02:30 AM
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#13
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Moderator
Join Date: Nov 2004
Location: Long Grove, IL
Posts: 5,002
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There were no high-output Quad4s when that manifold was made.
__________________
Cliff Scott
2004 Alero GX w/sport pkg - Sold, living somewhere in WI now.
2011 Saab 9-5 Turbo4 M6
2004 Corvette Convertible M6
1994 Chevy Beretta - Quad4/M5
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04-18-2008, 11:41 AM
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#14
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GLS member
Join Date: Mar 2007
Location: Missouri
Posts: 1,442
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I saw one of those at the junkyard. Its funky looking in real life on the motor.
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