This must be the best bang for the buck mod for Non-PI cars

[DarrinB]

Gaskets

He used the regular gaskets, not the PI ones. I would think the PI gaskets would be the best route if they will fit. I know there are mounting tabs on the PI gaskets that will not line up on the NPI heads but you could cut those off since they are only plastic pins. I think the water passages on the PI head and gasket are a little smaller too. So hard to remember without them in front of me. I will look them all over when I get home. Without doing that, I am not sure.
I will take and post pics of what I find. I have PI and NPI heads, gaskets and intakes in the garage.

 

[matsm21]

the best thing about this is that its a component of the headswap we've all been waiting/saving to do. so while we gather the money to do the whole thing right(p/p, cams,lt's etc) we can get more power w/out wasting money on something that wont fit.

 

[97BlackSteed]

The next logical step for me will be PI cams. That will be a while before I get those though. After cams, its gonna be dyno tune time for me.

 

[COramprat]

So we've about figured that the heads are not as restrictive as once thought. Turns out it is the intake manifold. I knew I was waiting around for a swap for a reason and that is to not swap at all.

 

[DarrinB]

this is a dumb question but would we use the PI manifold gaskets or the NPI gaskets?

Well, I concede to the NPI gaskets I think. The PI gasket does have a smaller hole for the water passage and when you match it up to the NPI head, it's way too close for me. I just don't think it would seal.
Conversely, the NPI gasket is really close on one corner of each port of the pI intake. Permatex would work really well there. I think I would trust that more.
Hey, somebody make a good gasket for this app will ya???

 

[Steeda Cheeta]

Great thread!!!!! I am happy to see the NPI guys can get a little without selling a kidney! I wonder if the bullitt can bolt up?

 

[Teen'93stang5.0]

wait now, so the better of the two is the NPI gasket right? and whats permatex?



about the temp sensor tho, couldnt you just use a T fitting?

 

[DarrinB]

Permatex

whats permatex?

 

[DarrinB]

I wonder if the bullitt can bolt up?

Oh God!
Hadn't thought of that yet. But I don't have one of those just lying around though.
Ports should all be the same. The Bullitt uses the exact same PI heads and takes the exact same intake gaskets.
Here we go again...

 

[Vellines]

Great Thread!

The dyno numbers looks great as does the potential of a dyno tune and now I am actively searching for a PI intake! I was considering doing a headswap, but this has certainly made me rethink my options.

Keep the info coming!

Bob

 

[pdsq98gt]

I don't know about anyone else, but I wouldn't be putting any RTV on my intake gaskets. It could get sucked up into the intake and possibly cause some problems.

 

[Teen'93stang5.0]

i dont think the bullet would be as impressive as it would on PI heads, just my gut feeling that for some reason it wont...but i hope im wrong

anyway, yeah, id rather not use RTV to fab up part of an intake gasket, id rather just take the closer matching of the two and run with that.........

 

[2002BLGT]

I wonder what would happen if you put some rags to catch the metal shavings down in the ports of the head and took your time and ported the heads out gradually to the size of the gasket , that way you do away with alot of the turbulence ??????????????????? , just a thought , cant wait to see someone try that , and see what kind of numbers they put up ??? cant make it any worse , smoothing out the airflow can only make it better. right ?

 

[Ottomatic]

97BlackSteed, could you go into more detail about the new coolent line that you mentioned in your write up? How much was it and do you have a part number?

 

[JohnnyLangton]

I don't know about anyone else, but I wouldn't be putting any RTV on my intake gaskets. It could get sucked up into the intake and possibly cause some problems.

Got any idea on what was used for years to make intake gaskets?
Simply RTV by itself-and no gasket material at all.
Adding a bit of RTV in the spot that the NPI gasket doesn't match up perfectly would be safe.Ever try to to remove a piece of cured RTV from a cylinder head or other engine part? It's not easy,and the RTV that would be used on the NPI gasket would be under pressure from the intake beiong boolted down..It's not gonna go anywhere.
I've got bullitt intake and cams on the way..The results will be very interesting.
JL

 

[RysRed96GT]

97BlackSteed, could you go into more detail about the new coolent line that you mentioned in your write up? How much was it and do you have a part number?

the coolant line was just the 99+ transfer tube that goes back through the block off teh water pump. just go to ford and pick it up. it's metal, costs about 20-some bucks i remember.

looks like this...

<img src="http://forums.stangnet.com/attachment.php?attachmentid=18080">

 

[Ottomatic]

the coolant line was just the 99+ transfer tube that goes back through the block off teh water pump. just go to ford and pick it up. it's metal, costs about 20-some bucks i remember.

looks like this...

<img src="http://forums.stangnet.com/attachment.php?attachmentid=18080">

Thanks a lot.

I've got bullitt intake and cams on the way..The results will be very interesting.

To say the least.

 

[vvzer0incvv]

Sorry to steal your thread but what do you guys think about this: Some of the 96-98 guys don't PI swap cause of the increase in compression. If they wanna stay NA thats fine but Supercharger is outta question without some work. Couldn't us 96-98 guys benifit more if we used PI CAMS and PI INTAKE(maybe the one with the adapter plate? to take care of port matching) and gain some power while still leaveing the option of Supercharging or turbocharging open for downt he road?

I was just thinking about this and thought that i would ask some opinions. Thanks

 

[LI98GTStang]

Sorry to steal your thread but what do you guys think about this: Some of the 96-98 guys don't PI swap cause of the increase in compression. If they wanna stay NA thats fine but Supercharger is outta question without some work. Couldn't us 96-98 guys benifit more if we used PI CAMS and PI INTAKE(maybe the one with the adapter plate? to take care of port matching) and gain some power while still leaveing the option of Supercharging or turbocharging open for downt he road?

I was just thinking about this and thought that i would ask some opinions. Thanks

I think that there are a lot of us NPI guys that are with you. I'm halfway there. If only the adapter plate kit weren't so much money.

 

[vvzer0incvv]

See the way i was looking at it is say that i go with some patriot stage 2 p&p heads and some pi cams I'm looking at $2k right there not counting the intake manifold and other misc parts. The intake and adapter plate are what $500 and PI cams are another $500 new(max prices) Yes with the heads i'd probably have another 35hp(tops) but then in order to supercharge i have to have bowl work done. This way it'll cost me $1k to do the cam and intake and i have another $1k plus to put towards a blower. With out the PI heads i don't think that will get the high numbers like others but we could be a lot closer. I may be totally wrong, i was just thinking and thought i would ask. You guys at stangnet know everything. Thanks for any replies