[noppe180]

http://www.moddedmustangs.com/forums...ehicle&CID=626

how does he have a pi intake? w/o the heads? any1 help me out

[sonicblue]

to upgrade to a complete pi set up you need the heads and cams and intake. but you can do them seperately....and the intake would prolly be the easiest to do, but if i am not mistaken the biggest gain is from the heads and cams

[White99stang]

you can get an adapter to fit the pi intake to non-pi intake heads

[jagstang96]

U can do the intake by itself without doing the pi heads it does require some small mods but its not worth it without the heads casper did a great post of this procesure

[jagstang96]

http://www.moddedmustangs.com/forums...ghlight=casper

[jagstang96]

this should anser your questions and concerns

[Boomer]

Originally Posted by sonicblue to upgrade to a complete pi set up you need the heads and cams and intake. but you can do them seperately....and the intake would prolly be the easiest to do, but if i am not mistaken the biggest gain is from the heads and cams

That would be incorrect 15-20rwhp intake,15-20rwhp cams and 5-10 rwhp heads.

[Mr. E]

Originally Posted by Boomer Originally Posted by sonicblue to upgrade to a complete pi set up you need the heads and cams and intake. but you can do them seperately....and the intake would prolly be the easiest to do, but if i am not mistaken the biggest gain is from the heads and cams That would be incorrect 15-20rwhp intake,15-20rwhp cams and 5-10 rwhp heads.

So a full PI swap is good for 35-50 rwhp? Not bad, I thought it was only 20-25 rwhp.

[beheivjer]

i thought you only gain like 50 to 60 hp at the crank with a pi swap

i only got 15 hp at the wheels with the pi intake and a set of bbk headers

[jagstang96]

the heads give u the most gain due to the valve work , that is why if u get patriot heads the valve work and cams are diff so it raises the compresion. which inreturn gives u more horse power

[beheivjer]

its closer to 30hp at the wheels with a full pi swap.

[Mr. E]

So a PI swap basically turns a 96-98 into a 99-04 power wise? Same hp and tq?

[beheivjer]

thats the point of the swap you gain a little bit more because of the slight bump in compression

[beheivjer]

but then it also helps out with all the other mods they are a little more responsive than on the npi motors

thats why im going to go with the pi swap onto my stroker kit i got

[Boomer]

Originally Posted by jagstang96 the heads give u the most gain due to the valve work , that is why if u get patriot heads the valve work and cams are diff so it raises the compresion. which inreturn gives u more horse power

I'm not going to debate this again, the heads are not going to net you the big numbers and showing that you named Patriot shows you spend to much time reading magazines. Do a little search on the forums and you'll see they (Patriot)have had quite a few problems with quality issues. The valves have little to nothing to do with the gains and the heads(PI orNPI) put out nearly the same numbers ported or even stock for that matter.
The major gain (5-10) is from the compression being raised from the different combustion chamber design. A heavily ported head on a near stock motor will not net anywhere near what it would on a F.I. or race built N/A(high compression/upwards of 11:1).

The point of the swap is to allow more air to enter the engine, the npi intake features small runners(diameter, less plenum volume and poor radius' that cause a slower air velocity. The gains seen with the intake are complimented when the cams (PI) are installed. The heads flow nearly the same however the NPI heads are limited to aroung .540" lift due to the spring perch height.

The question you have to ask yourself , are the heads worth the money for gains ?

[sonicblue]

patriot heads are fine. i know many people that run there heads that put out huge power and dont have any problems.they had a problem in the beginning and they seem to have fixed that. i said the biggest gain would be from the heads and the cams...then you said i was wrong after you claim the intake gets you 15-20 and the heads 5-10 and cams 15-20 therefore making the head and cams swap more of a gain. if you can explain how i am wrong then i will gladly admit it

[jEEd]

well because ... if you think heads/cams net more (20-25rwhp together) over the cams/intake (30-40rwhp) then i guess i must not know math. like he said you only get hp from the heads because of its compression. you would get more hp from the intake+cams over the heads+cams.

[sonicblue]

ok i see what you are saying. i was thinking either heads and cams or just the intake....but seriously if you aregoing to do the cams you might as well do the heads at the same time. guess thats just what i was thinking.

[Boomer]

As jEEd said 30-40 from the intake/cam swap, 20-25 from cam/head swap. I wish everyone you know luck with patriot heads I had a bad deal with them, the money I saved buying their heads costed me a $4000 shortblock.

[Boomer]

Originally Posted by sonicblue ok i see what you are saying. i was thinking either heads and cams or just the intake....but seriously if you aregoing to do the cams you might as well do the heads at the same time. guess thats just what i was thinking.

Thats cool, honestly do you think 5-10 is worth the money for P.I heads ? There are mods that cost less that net nearly the same amount.