PI Heads

tyler1987 · March 23rd, 2010, 09:57 AM

I am looking at putting my newly ported with stage 3 cams into my 98gt but was wondering how hard the swap is with not pulling the motor and if any one could send are give me a link to a sight that I can get the cam gear holder so I do not have to retime the hole thing.

Uncle Humjaba · March 24th, 2010, 02:04 PM

Timing isnt that hard and you have to take the front cover off to get the head off anyways. I did it with the engine in the car and didnt have any problems.

koessl · March 24th, 2010, 02:25 PM

Wait, do you have these aftermaket cams in a set of PI heads that are going on your NPI motor?

Or are you PI swapped and just want to swap your cams now?

edit:
I just looked at your garage, no reference to PI heads.... soooo

Yea, youll have to pull the front cover and timing components to do this. Dont worry about the extra tool. That would be nice if you were just putting in cams, but thats not the case. It would be a waste of money, timing these things are easy.

tyler1987 · April 10th, 2010, 11:59 AM

Hey sorry guys eben gone for a bit. I have the pi heads and I am putting the stage 3 cams in them. I do not habe them in the car just yet planning on the port and poliss atm with patriot sping kit. What would you say i would gain out of the full swap i have the intake on there atm just not the heads with the cams i want. I figur i would at least get 60-70hp is that about right? The flow is supost to be something like 285 after ported that is what they stated at least is that about right?

Quick99 · April 10th, 2010, 12:46 PM

You should really check valve to piston clearance with those cams and flat top pistons.

koessl · April 10th, 2010, 05:41 PM

Supposedly you should pick up a nother ~40 by use of stock PI heads/cams. I have no idea what effect your "stage 3" cams will do.

who makes the cam?

chillcool68 · April 10th, 2010, 07:11 PM

May want to look into notching the pistons for valve clearance, don't want them valves tappin the pistons, as far as the head swap, pretty easy, the only problem i had was the oil dipstick tube, good luck....

tyler1987 · April 11th, 2010, 08:09 PM

will be comp cams and how will i be able to check for the clearances it is just stock pistons and stuff so not sure thanks for the help guys.

Thumbie · April 11th, 2010, 11:39 PM

stick a breaker bar on the front crank pulley and turn it around at least 4 times and if you hear your valves getting broken then you got a problem lol

JK7208 · April 12th, 2010, 10:03 AM

you will have ptv clearance issues with stage 3 cams even stage 2 have ptv issues the must be degreed correctly

March 23rd, 2010, 09:57 AM	#1
tyler1987 Regular 1998 Mustang GT N/A Join Date: Feb 2010 Location: Shawnee OK Posts: 108 iTrader: 0 reviews	PI Heads I am looking at putting my newly ported with stage 3 cams into my 98gt but was wondering how hard the swap is with not pulling the motor and if any one could send are give me a link to a sight that I can get the cam gear holder so I do not have to retime the hole thing. __________________ Then there was one.

March 24th, 2010, 02:04 PM	#2
Uncle Humjaba Enthusiast 1996 Mustang GT Premium 15.2@91 Join Date: Aug 2007 Location: Tracy, CA and Clemson, SC Posts: 590 iTrader: 0 reviews	Timing isnt that hard and you have to take the front cover off to get the head off anyways. I did it with the engine in the car and didnt have any problems. __________________ "He is no fool who gives up what he cannot keep to gain what he cannot lose."

March 24th, 2010, 02:25 PM	#3
koessl Hardcore Enthusiast 1998 GT suckaaa 4 tickets @ 1 stop Join Date: Jul 2009 Location: Illinois Posts: 1,385 iTrader: 0 reviews	Wait, do you have these aftermaket cams in a set of PI heads that are going on your NPI motor? Or are you PI swapped and just want to swap your cams now? edit: I just looked at your garage, no reference to PI heads.... soooo Yea, youll have to pull the front cover and timing components to do this. Dont worry about the extra tool. That would be nice if you were just putting in cams, but thats not the case. It would be a waste of money, timing these things are easy. __________________ Military Crew Completely stock... I promise. Last edited by koessl; March 24th, 2010 at 02:27 PM.

April 10th, 2010, 11:59 AM	#4
tyler1987 Regular 1998 Mustang GT N/A Join Date: Feb 2010 Location: Shawnee OK Posts: 108 iTrader: 0 reviews	Hey sorry guys eben gone for a bit. I have the pi heads and I am putting the stage 3 cams in them. I do not habe them in the car just yet planning on the port and poliss atm with patriot sping kit. What would you say i would gain out of the full swap i have the intake on there atm just not the heads with the cams i want. I figur i would at least get 60-70hp is that about right? The flow is supost to be something like 285 after ported that is what they stated at least is that about right? __________________ Then there was one.

April 10th, 2010, 05:41 PM	#6
koessl Hardcore Enthusiast 1998 GT suckaaa 4 tickets @ 1 stop Join Date: Jul 2009 Location: Illinois Posts: 1,385 iTrader: 0 reviews	Supposedly you should pick up a nother ~40 by use of stock PI heads/cams. I have no idea what effect your "stage 3" cams will do. who makes the cam? __________________ Military Crew Completely stock... I promise.

April 10th, 2010, 12:46 PM	#5
Quick99 Regular 1999 Mustang GT ? Join Date: May 2008 Location: Fullerton CA Posts: 351 iTrader: 0 reviews	You should really check valve to piston clearance with those cams and flat top pistons.

April 10th, 2010, 07:11 PM	#7
chillcool68 Newbie Join Date: Jan 2007 Posts: 13 iTrader: 0 reviews	May want to look into notching the pistons for valve clearance, don't want them valves tappin the pistons, as far as the head swap, pretty easy, the only problem i had was the oil dipstick tube, good luck....

April 11th, 2010, 08:09 PM	#8
tyler1987 Regular 1998 Mustang GT N/A Join Date: Feb 2010 Location: Shawnee OK Posts: 108 iTrader: 0 reviews	will be comp cams and how will i be able to check for the clearances it is just stock pistons and stuff so not sure thanks for the help guys. __________________ Then there was one.

April 11th, 2010, 11:39 PM	#9
Thumbie Hardcore Enthusiast 2001 Cobra 14.2@102 (I suck) Join Date: Apr 2009 Location: SF Bay Area, CA Posts: 1,621 iTrader: 0 reviews	stick a breaker bar on the front crank pulley and turn it around at least 4 times and if you hear your valves getting broken then you got a problem lol __________________ 2001 Cobra with SRA swap, modded for twisties MM Cobra Club Member #76

April 12th, 2010, 10:03 AM	#10
JK7208 Regular 1996 mustang gt 13.07@104.66 Join Date: Oct 2009 Location: frackville, pa Posts: 126 iTrader: 0 reviews	you will have ptv clearance issues with stage 3 cams even stage 2 have ptv issues the must be degreed correctly

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