Got My PI Heads

fsttang96 · May 24th, 2009, 12:25 AM

Just got my PI heads to start my swap ! The heads came off of a 2002 GT and I was wondering if anyone knows how much they are going to increase my compression and if I should be concerned since I am going to keep my supercharger on ?

4.6LMadness · May 24th, 2009, 01:16 AM

you might be in a little bit of a pickle with a supercharger. Comp. will be ruffly 10.5 to 1

330CubeGt · May 24th, 2009, 02:06 AM

If you need a Intake i have a Aluminum x over i have one cheap.

And yea the raised comp ratio is not to good.

Military98stang · May 24th, 2009, 02:31 AM

def keep your boost low if you are set on keeping your supercharger on it.

fsttang96 · May 24th, 2009, 01:03 PM

[QUOTE=Military98stang;2087493]def keep your boost low if you are set on keeping your supercharger on it.[/QUOTE

Im only running about 7# of boost I think ! The guy at Vortec said since I dont have any cats on it probably lost a pound or two of boost . Maybe ill call the guy that I got the heads off of he has a speed shop in SC that does PI swaps all the time and said if I have any questions to give him a call ..

BAzombie · May 24th, 2009, 02:22 PM

You can also get different head gaskets that are thicker. It'll lower the cr a little.

I'm not sure what gaskets they were talking about but I read it on here someplace. I'm not sure how much the drop in cr they give either.

fsttang96 · May 24th, 2009, 04:07 PM

Originally Posted by BAzombie

You can also get different head gaskets that are thicker. It'll lower the cr a little.

I'm not sure what gaskets they were talking about but I read it on here someplace. I'm not sure how much the drop in cr they give either.

Thats probably what ill do just to be safe ! But if anyone comes acrossed the the gaskets number please let me know .......

May 24th, 2009, 12:25 AM	#1
fsttang96 Regular 1996 Mustang GT 8.72 @ 81.68 1/8 mile Join Date: Oct 2007 Location: Shanksville, PA Posts: 123 iTrader: 0 reviews	Got My PI Heads Just got my PI heads to start my swap ! The heads came off of a 2002 GT and I was wondering if anyone knows how much they are going to increase my compression and if I should be concerned since I am going to keep my supercharger on ? __________________ 1 of 829 made Bright Tangerine Orange 10Lb Vortech V2,CXRacing FMIC MHS Stage 2 Blower cams,39# Injectors PI Intake,Ported and Polished NPI Heads BBK Headers,78mm BBK Throttle Body Mac H Pipe,2.5 inch Flowmaster Exhaust ,373 Gears

May 24th, 2009, 01:16 AM	#2
4.6LMadness Enthusiast 1998 GT Mustang N/A Join Date: Feb 2009 Location: Portsmouth, Ohio Posts: 845 iTrader: 0 reviews	you might be in a little bit of a pickle with a supercharger. Comp. will be ruffly 10.5 to 1 Last edited by 4.6LMadness; May 24th, 2009 at 02:20 PM.

May 24th, 2009, 02:06 AM	#3
330CubeGt MM Fanatic 1994 Mustang 5.0 1996 Mustang V6 Join Date: Dec 2007 Location: Orlando Posts: 4,866 iTrader: 14 reviews	If you need a Intake i have a Aluminum x over i have one cheap. And yea the raised comp ratio is not to good. __________________ -04 IRS - Magnaflow - Wheel Replica - Autometer - FTBR - FRPP - SCT - Brembo - PRO 5.0 - BOI-

May 24th, 2009, 02:31 AM	#4
Military98stang Enthusiast 1998 GT VERT 5 SPEED Join Date: Apr 2008 Location: Va beach Posts: 948 iTrader: 1 reviews	def keep your boost low if you are set on keeping your supercharger on it. __________________ http://www.cardomain.com/ride/3068325 EAT ...... SLEEP .......LIFT........repeat!

May 24th, 2009, 01:03 PM	#5
fsttang96 Regular 1996 Mustang GT 8.72 @ 81.68 1/8 mile Join Date: Oct 2007 Location: Shanksville, PA Posts: 123 iTrader: 0 reviews	[QUOTE=Military98stang;2087493]def keep your boost low if you are set on keeping your supercharger on it.[/QUOTE Im only running about 7# of boost I think ! The guy at Vortec said since I dont have any cats on it probably lost a pound or two of boost . Maybe ill call the guy that I got the heads off of he has a speed shop in SC that does PI swaps all the time and said if I have any questions to give him a call .. __________________ 1 of 829 made Bright Tangerine Orange 10Lb Vortech V2,CXRacing FMIC MHS Stage 2 Blower cams,39# Injectors PI Intake,Ported and Polished NPI Heads BBK Headers,78mm BBK Throttle Body Mac H Pipe,2.5 inch Flowmaster Exhaust ,373 Gears

May 24th, 2009, 02:22 PM	#6
BAzombie Regular 1996 GT Convertible 13.88@100.71 Join Date: Nov 2008 Location: Queensbury, NY Posts: 360 iTrader: 0 reviews	You can also get different head gaskets that are thicker. It'll lower the cr a little. I'm not sure what gaskets they were talking about but I read it on here someplace. I'm not sure how much the drop in cr they give either. __________________ Mods: Katzkin Leather, MMR stage II heads w/PI cams, PI intake, Accufab 75mm TB & Plenum, CAI, Ram HDX clutch, Pacesetter LT's & X pipe, Pypes hi-flo cats, Flowmaster cat back,3.73 gears, Sct SF3 tuner, Mamba M2's

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