94/95 Tbird vs NPI Mustang Cams - TCCoA Forums
 
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post #1 of 15 (permalink) Old 06-28-2004, 10:09 AM Thread Starter
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94/95 Tbird vs NPI Mustang Cams

Just an idea I am exploring but will the 96-98 Mustang cams work in a 95 Tbird? If they do, would there be any performance gain?

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post #2 of 15 (permalink) Old 06-28-2004, 11:21 AM
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I'm no expert, but I would think there is no difference between 96-98 mustang NPI cams and the 95 NPI cams.

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post #3 of 15 (permalink) Old 06-28-2004, 07:34 PM
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They are the same cams

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post #4 of 15 (permalink) Old 06-29-2004, 11:42 AM
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Quote:
Originally posted by Darrin
They are the same cams

Get 98 GT head with PI cams and you'll have gains.. I have some 98 GT heads for sale if interested..


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post #5 of 15 (permalink) Old 06-29-2004, 02:07 PM
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Yes, good point!
The heads are different even though the cams are the same. The newer heads and PI cams are a good match. Stick a PI intake on it while you are in there and have a ball

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post #6 of 15 (permalink) Old 06-29-2004, 04:08 PM
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Quote:
Originally posted by Darrin
Yes, good point!
The heads are different even though the cams are the same. The newer heads and PI cams are a good match. Stick a PI intake on it while you are in there and have a ball
It's alot more complicated to put a PI intake on a 94-95 than a 96-97.




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post #7 of 15 (permalink) Old 06-29-2004, 06:16 PM
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Quote:
It's alot more complicated to put a PI intake on a 94-95 than a 96-97.
Yes, yes it is and the gains are even more impressive when going from that crappy aluminum intake to the PI. All the more reason to do it.
A search will yield the proper info on what all one will need to do it.

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post #8 of 15 (permalink) Old 06-29-2004, 09:25 PM
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I'm working on a '95 intake to see exactly how much capability there actually is there through a full port throughout, and I was told that the real problem with the '95 intake is the lack of plenum volume, and I have a fix for that as well. I don't know what kind of gains there will be at all, but we'll see. If none, well then, I only have about $30 worth of aluminum invested, no big loss. I have a feeling that the runners will allow enough porting to make a difference, and get rid of that restrictive elbow, and you might actually see some HP out of that old crappy intake.
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post #9 of 15 (permalink) Old 06-29-2004, 10:07 PM
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Quote:
Originally posted by Darrin


Yes, yes it is and the gains are even more impressive when going from that crappy aluminum intake to the PI. All the more reason to do it.
A search will yield the proper info on what all one will need to do it.
And by the time he converts to the 96+ intake, he could have bought a new engine.




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post #10 of 15 (permalink) Old 06-30-2004, 03:21 PM
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Rich95XR7; be sure and let us know how it comes out when you get that '95 manifold modded, and I have a spare to sell you if needed, cheap...I think that theres some power there, and aluminum when worked up is superior... I am kinda dabbling in modding a 5.4 intake as soon as I find one fror a reasonable price...
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post #11 of 15 (permalink) Old 06-30-2004, 03:57 PM
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The main hangup is adding the plenum volume right now. I'm working on a spacer to weld in where I've cut the bottom of the intake off right now on the mill, but the metal is so thin in that area, it could pose a problem, but we're optimistic right now. I think that with the new intake elbow, bigger throttlebody, and revised intake, '95 owners could see the same gains as switching to the PI, but that's just hopeful thinking right now, we'll see. The only problem I foresee in this undertaking is the mass time involved would make it financially impossible for the average joe to do this. I'm lucky, I have access to a mill, raw aluminum, and all the tools I need.
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post #12 of 15 (permalink) Old 06-30-2004, 05:30 PM
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Rich,

A few have already tried and given up. The experience of one is here.
Adding more plenum hasn't been done yet I don't think. How are you dealing with the other shortcomings like tight turns and such?
It would be good to see someone succeed with it!

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post #13 of 15 (permalink) Old 06-30-2004, 08:22 PM
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There are lessons to be learned from both the Cobra R intake, and the P-51, which is actually the only modular intake thats both streetable and makes significant power gains ... the Reichard is interesting , but only for a purpose built strictly race car..I'm useing a 99 5.4 liter truck intake right now(alum., NPI) which , I feel is really holding me back , but the 2001 plastic iteration didnt give me much more than antifreeze leaks, and so I switched back to the Alum. one... if and when I find another alum. 5.4 manifold,for a reasonable price I will start the cutting fitting and welding process myself.... I say go for it Rich!
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post #14 of 15 (permalink) Old 06-30-2004, 08:27 PM
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I contacted RichardM before I started, and asked him about his experiences. I also talked to a few other people in the know about what I was about to do, and they verified that the major problem with the intake was the lack of plenum volume and not particularly the sharp turns. The '95 intake also has shorter runner length than the later intakes, so it should present itself better, if it can be made to flow well enough, to higher rpm ranges. Like I said, I don't know what to expect yet, and as soon as I finish it up, we'll see. I'll bolt it on, and hit the dyno, and compare them to my sheets now. Same dyno, same mods to see what the real deal is. If there's no gain, or it's worse, I'll put my factory intake back on, and drive on, but I suspect there will be some gain, simply because of the increase in runner flow, and the added plenum volume.

This is just an experiment. And like many of the other ones around here, we won't know what improvement there will be until it's done. Remember, about a year ago, everyone in the Ford world was swearing that the NPI heads were junk, and should just be tossed in favor of PI heads, everyone knew that. Now it's a different story, because someone took the time and effort to do it. The main thing is, I have more time than money, and the equipment to do this, so why not. I don't believe that anyone has tried to go to the lengths that I am, and noone might ever do it again. The sheer time that will be into this intake would make it illogical for anyone without a machineshop to even try.
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post #15 of 15 (permalink) Old 06-30-2004, 10:21 PM
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The fun is in the doing.... if it were easy you'd probably forget it, heck, I carved the tapers (spiling) for a sixteen foot cedar strip boat with a pocket knife, albeit a good sharp one...
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