PI heads vs ported non pi

stanglifemike · January 19th, 2007, 05:34 PM

Just wondering if porting non pi heads would be worth it. I have a pair in my garage that a buddy gave me after sellin his car( he was going to port them). I'm thinkin the port and polish would cost about as much as pi's?? Which would giveme more power and how much? Thanks

mdvaldosta · January 19th, 2007, 05:38 PM

Ported Pi's and ported non-PI's would flow about the same (and some people prefer ported non-PI's over anything), but the PI's would offer more compression and a better fit for PI intakes. If your choice is ported non-PI's vs stock PI's... I'd pick the PI's.

tlgrant · January 21st, 2007, 03:25 AM

from what i know ported NPI heads flow damn good. if u go with PIs u wont have to wrry about the coolant passages not lining up. but ported NPI would def put out more hp then stock PI and if your going to spend the $ to port might as well have them up the compression on them to about where the PIs are. or keep them the way they are if ur going to boost the motor

January 19th, 2007, 05:34 PM	#1
stanglifemike IBEATU 06 GT, 98 GT, & 93 Notch Join Date: Dec 2006 Location: Douglasville, GA Posts: 5,937 iTrader: 0 reviews	PI heads vs ported non pi Just wondering if porting non pi heads would be worth it. I have a pair in my garage that a buddy gave me after sellin his car( he was going to port them). I'm thinkin the port and polish would cost about as much as pi's?? Which would giveme more power and how much? Thanks __________________ 98 GT: some stuff 06 GT: more stuff 93 Notch: 4 cyl at birth, now 5.0 drivetrain and stock exterior and interior= True Sleeper Paxton/Vortech Crew Member #3 FRPP's #1 Dealer Injected Engineering BMR Suspension

January 21st, 2007, 03:25 AM	#3
tlgrant Regular Join Date: Aug 2006 Posts: 317 iTrader: 0 reviews	from what i know ported NPI heads flow damn good. if u go with PIs u wont have to wrry about the coolant passages not lining up. but ported NPI would def put out more hp then stock PI and if your going to spend the $ to port might as well have them up the compression on them to about where the PIs are. or keep them the way they are if ur going to boost the motor __________________ 96 GT , cams,intake manifold,CAI,Exhaust,Full Hotchkis suspension, and many more

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January 19th, 2007, 05:38 PM	#2
mdvaldosta MM Fanatic 2002 Mustang GT 11.47@120.58 Join Date: Aug 2005 Location: Valdosta, GA Posts: 3,940 iTrader: 0 reviews	Ported Pi's and ported non-PI's would flow about the same (and some people prefer ported non-PI's over anything), but the PI's would offer more compression and a better fit for PI intakes. If your choice is ported non-PI's vs stock PI's... I'd pick the PI's.

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