how much more hp from pi cams on non pi heads

ron98gt · August 17th, 2008, 12:13 AM

i have bought a set of pi heads and had them done over w/comp cams 270's w/beehive springs, now i'm not sure if i waunt to instal them due to degreeing the cams (makes me nervous) and the amount of work involved. i'm just not sure it will be worth it, so now i'm considering swaping my non pi cams for the pi cams that i had replaced w/com cams. does anyone know how much of a gain this switch would make & how much work needed compaired to a total pi head and intake swap. i'm not to sure what to do, the redone heads have been sitting around for 3 1/2 months the degreeing of the cams just makes me nervious(i don't waunt to screw anything up). let me know what you think.

ron98gt · August 17th, 2008, 12:24 AM

96GtGoodz · August 17th, 2008, 12:38 AM

i am about to do a P.I. swap as well wait till u have the heads cams and intake then do it (while things are ripped apart just do it all) from the heads about 10-15 the cams 5-10 intake 10-15 wait all together and get a deffanit 45-50 (with tune n shit) it is definately worth it to do it all at once that why i am waiting i have the cams and intake in the garage waiting for the heads then installation $$$$ then im doin it i wish i had the tools to do it myslef/ depending on wher you are i can give u good shops to go to msg me back and tell me how it goes.

97GT4.6 · August 17th, 2008, 12:46 AM

You could always have a shop degree the cams and install the heads and such for you. If you already have the heads and the cams, you might as well get them installed. If you want to just do the PI cams in the NPI heads, its a lot more simple, but the gains won't be as great.

HBK_2007 · August 17th, 2008, 12:52 AM

dont be a chicken and do it. i thought changing the motor in my 88 tbird was scary, esspecially half way thru it, but after i got it done, it didnt seem that bad and i was hella proud of it/myself

ron98gt · August 17th, 2008, 07:23 PM

Originally Posted by 96GtGoodz

i am about to do a P.I. swap as well wait till u have the heads cams and intake then do it (while things are ripped apart just do it all) from the heads about 10-15 the cams 5-10 intake 10-15 wait all together and get a deffanit 45-50 (with tune n shit) it is definately worth it to do it all at once that why i am waiting i have the cams and intake in the garage waiting for the heads then installation $$$$ then im doin it i wish i had the tools to do it myslef/ depending on wher you are i can give u good shops to go to msg me back and tell me how it goes.

i'm in Peabody Ma 01960. i have been looking at a couple of placesand the cost to have them do it is going to run about $1200+, so that's why i was considering doing it myself. i'm already into the heads, intake, cams, springs, head changin kit & to have them pro done $1600

Boomer · August 17th, 2008, 08:49 PM

Truth is the intake is worth 10-25, cams are worth 15-25 (degreed) and heads (unported) 5-10 (this is only from the compression increase. We did a car a year ago cams/intake only that made 46 rwhp over the NPI parts. The only mods were the P.I intake and cams with no other bolt ons other than flowmasters.

ron98gt · August 18th, 2008, 08:49 PM

Originally Posted by Boomer

Truth is the intake is worth 10-25, cams are worth 15-25 (degreed) and heads (unported) 5-10 (this is only from the compression increase. We did a car a year ago cams/intake only that made 46 rwhp over the NPI parts. The only mods were the P.I intake and cams with no other bolt ons other than flowmasters.

what would you guess if i did the swap with my mods listed (well they only neted me 50hp over stock) so would i add the increase that you stated 46hp to my 50hp for 96hp or will that bump up the hp from my mods. i'm not sure how one would guessstamate.

zmaier · August 18th, 2008, 10:36 PM

i like the hood btw!

ron98gt · August 18th, 2008, 10:53 PM

thanks, it's a VIS carbonfiber mach II, it is uper light weight. but i still miss my cobra r hood 3", i still think that that hood looks the best on this car. but i'm adjusting.

Boomer · August 18th, 2008, 11:07 PM

Originally Posted by ron98gt

what would you guess if i did the swap with my mods listed (well they only neted me 50hp over stock) so would i add the increase that you stated 46hp to my 50hp for 96hp or will that bump up the hp from my mods. i'm not sure how one would guessstamate.

That is just what we saw from just the PI intake/cam swap on that car. You should figure roughly 40rwhp + whatever you get from your current mods. 40 is going to be about the average when degreeing the stock PI cams and using a PI intake. The condition of the engine will determine if you make more or less. You will probably see more with your listed mods as the combination of the intake/cams will help with the overall combination.

Danalba · October 20th, 2010, 08:05 PM

so swapping out npi cams for pi cams I'll still have to degree them? even if I'm matching them up exactly using the method of marking the chains and sprockets?

03SonicBoom · October 20th, 2010, 09:33 PM

Originally Posted by Boomer

Truth is the intake is worth 10-25, cams are worth 15-25 (degreed) and heads (unported) 5-10 (this is only from the compression increase. We did a car a year ago cams/intake only that made 46 rwhp over the NPI parts. The only mods were the P.I intake and cams with no other bolt ons other than flowmasters.

I would agree with this. My buddy had a 96 GT and we did PI cams and intake. He never dyno'd it but there was a HUGE difference from stock.

97S281 · October 20th, 2010, 09:56 PM

Originally Posted by Danalba

so swapping out npi cams for pi cams I'll still have to degree them? even if I'm matching them up exactly using the method of marking the chains and sprockets?

You at least need to spin the motor and check for ptv clearance.

Danalba · October 20th, 2010, 11:21 PM

alright. iv just seen a write about about swapping from npi to pi without degreeing the cams after swapping as long as you match everything up exactly how the original cams were. since it is not a huge jump cams. i didnt know if this was true or not. just wanted to know for sure

August 17th, 2008, 12:13 AM	#1
ron98gt Regular 1998 mustang GT Join Date: Apr 2006 Location: MA Posts: 78 iTrader: 0 reviews	how much more hp from pi cams on non pi heads i have bought a set of pi heads and had them done over w/comp cams 270's w/beehive springs, now i'm not sure if i waunt to instal them due to degreeing the cams (makes me nervous) and the amount of work involved. i'm just not sure it will be worth it, so now i'm considering swaping my non pi cams for the pi cams that i had replaced w/com cams. does anyone know how much of a gain this switch would make & how much work needed compaired to a total pi head and intake swap. i'm not to sure what to do, the redone heads have been sitting around for 3 1/2 months the degreeing of the cams just makes me nervious(i don't waunt to screw anything up). let me know what you think.

August 17th, 2008, 12:38 AM	#3
96GtGoodz Enthusiast 96 Mustang GT 5spd Vert. Not sure need to go to a track Join Date: Nov 2007 Location: N.Y. Posts: 991 iTrader: 0 reviews	i am about to do a P.I. swap as well wait till u have the heads cams and intake then do it (while things are ripped apart just do it all) from the heads about 10-15 the cams 5-10 intake 10-15 wait all together and get a deffanit 45-50 (with tune n shit) it is definately worth it to do it all at once that why i am waiting i have the cams and intake in the garage waiting for the heads then installation $$$$ then im doin it i wish i had the tools to do it myslef/ depending on wher you are i can give u good shops to go to msg me back and tell me how it goes. __________________ Deep Forest Green FTW!!!! Spending all my money on it ^ *Make sure to leave rep for helpful posts*

August 17th, 2008, 12:46 AM	#4
97GT4.6 Hardcore Enthusiast 97 GT 14.2@99.8 @ 4800 ft Join Date: Oct 2007 Location: Fort Collins and Pueblo, Colorado Posts: 2,347 iTrader: 1 reviews	You could always have a shop degree the cams and install the heads and such for you. If you already have the heads and the cams, you might as well get them installed. If you want to just do the PI cams in the NPI heads, its a lot more simple, but the gains won't be as great. __________________ Cammed 2v Built By MustangMatt More mods than times your daughter has slept around

August 17th, 2008, 12:52 AM	#5
HBK_2007 Genibus Nitito Canus 2009 Ford Mustang GT Join Date: Jan 2008 Location: Wyoming Posts: 2,832 iTrader: 0 reviews	dont be a chicken and do it. i thought changing the motor in my 88 tbird was scary, esspecially half way thru it, but after i got it done, it didnt seem that bad and i was hella proud of it/myself __________________ Red 1996 GT: JLT RAI, Steeda Underdrive pullies, Stewart Waterpump; nothing to brag about Black 2009 45th aniverary edition GT 5 speed: K&N CAI, BBK Twin 62mm Throttle Body, BBK Underdrive Pullies, SLP Loudmouth

August 17th, 2008, 08:49 PM	#7
Boomer Enthusiast Join Date: Oct 2006 Location: warren, Mi Posts: 941 iTrader: 0 reviews	Truth is the intake is worth 10-25, cams are worth 15-25 (degreed) and heads (unported) 5-10 (this is only from the compression increase. We did a car a year ago cams/intake only that made 46 rwhp over the NPI parts. The only mods were the P.I intake and cams with no other bolt ons other than flowmasters. __________________ Just another 10 second Mustang, what did you expect ? http://youtube.com/watch?v=BgykaUrmfvM

August 17th, 2008, 12:24 AM	#2
ron98gt Regular 1998 mustang GT Join Date: Apr 2006 Location: MA Posts: 78 iTrader: 0 reviews

August 18th, 2008, 10:36 PM	#9
zmaier Regular Join Date: Dec 2007 Posts: 82 iTrader: 0 reviews	i like the hood btw!

August 18th, 2008, 10:53 PM	#10
ron98gt Regular 1998 mustang GT Join Date: Apr 2006 Location: MA Posts: 78 iTrader: 0 reviews	thanks, it's a VIS carbonfiber mach II, it is uper light weight. but i still miss my cobra r hood 3", i still think that that hood looks the best on this car. but i'm adjusting. __________________ 98 gt blk on blk 90k miles with BBk 75mm throttle body, C&L plenum, Diablosport predator,powerdyne supercharger & a few other things.

October 20th, 2010, 08:05 PM	#12
Danalba Newbie 97 npi 4.6 Join Date: Oct 2010 Location: bay city, michigan Posts: 5 iTrader: 1 reviews	so swapping out npi cams for pi cams I'll still have to degree them? even if I'm matching them up exactly using the method of marking the chains and sprockets?

October 20th, 2010, 11:21 PM	#15
Danalba Newbie 97 npi 4.6 Join Date: Oct 2010 Location: bay city, michigan Posts: 5 iTrader: 1 reviews	alright. iv just seen a write about about swapping from npi to pi without degreeing the cams after swapping as long as you match everything up exactly how the original cams were. since it is not a huge jump cams. i didnt know if this was true or not. just wanted to know for sure

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