3.2 intake plenum on 3.5? - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
 
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post #1 of 7 (permalink) Old 10-11-2016, 05:11 PM Thread Starter
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Question 3.2 intake plenum on 3.5?

hey guys,

not long ago i was reading on some site (that has since slipped my mind) that running the intake plenum from a 3.2 on a 3.5 would essentially make it a 3.5 H.O. has anyone done this, and if so could they verify?
thanks y'all!

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post #2 of 7 (permalink) Old 10-11-2016, 08:13 PM
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It would give you the SRV, and MTV valves, which are part of the "HO" function. They would not operate unless the wiring was there and the parameters were set in the PCM.

Assuming you have an 02 or newer car with a 3.5 Magnum engine; you would first have to convert the vacuum operated SRV valve on the 3.2 plenum to the electronically operated one seen on 02+ 3.5 HO engines...so you might as well just get a 3.5HO plenum from 02+.

Along with the 3.2 or 3.5HO plenum, you would need a matched PCM from an HO. This is also providing that the wiring is there to both valves 02-04. If the wiring is not there, it would have to be added, either by making a harness and pinning it to the PCM, or replacing the engine harness with that of an HO equipped car.


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Last edited by Daytrepper; 10-11-2016 at 08:18 PM.
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post #3 of 7 (permalink) Old 10-11-2016, 08:42 PM Thread Starter
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thanks, Daytrepper. my car is a 2002 with the 3.5 non H.O. , so i think i'll just go with the plenum from a 3.5. i appreciate the insight!

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post #4 of 7 (permalink) Old 12-28-2016, 10:47 PM
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are those valve you mentioned the 2 on the front of the plenum? one is kind of square(02-04, round on prior years) with an arm that rotates butterflys inside the plenum???

ive seen 3.5's @ the yard with that part deleted off the plenum, wiring, and a filler plate is screwed over where that mechanism used to be.
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post #5 of 7 (permalink) Old 12-28-2016, 10:51 PM
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Those are Non-HO (High Output) manifolds. Pretty common from 2002-2004.
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post #6 of 7 (permalink) Old 12-28-2016, 11:03 PM
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best I can tell all 3.5's have this tuner inside. that's the front lower item.




this is the item ive seen deleted.



just trying to make sure were on the same page.
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post #7 of 7 (permalink) Old 12-28-2016, 11:14 PM
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Like Dan says the MTV front and center will be blocked off and the SRV won't be there.

See this thread...particularly post #6'

https://www.dodgeintrepid.net/18-gene...fferences.html

Your circled pictures are pointing to the SRV valve and it's actuator. The first attached thumbnail appears to be the MTV valve inside the manifold that attaches to the front center of the manifold.
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