what is better

whitepony · 05-16-2004, 12:00 AM

ok i have a set of stock heads but they have ben shaved 60 thousands of an inch and a 3 angle valve job and ported

now would they be better then a set of stock gt 40p heads why or why not??

just need some in put thanks

tmoss · 05-16-2004, 10:06 AM

Depends totally on the quality of the port work. I'd be worried about piston-to-valve clearance on heads shaved .060". The P head is a great low buck street head.

MiracleMax · 05-16-2004, 06:12 PM

Well GT40p's flow 190 cfm out da box on top, average flow (over five points) is 149, your E7TE's probably flow an average of 130 to 135 cfm?

whitepony · 05-18-2004, 07:19 AM

so what your saying is when i get the gt40 p's shaved 20thow and ported they will be way better then the heads i have on there now??? what u think the might flow the gt40p's after shaved and ported???

420nitro · 05-18-2004, 07:50 AM

Shaving/milling the heads wil increase compression. It will also throw your intake alighnment off. You will need to check & most likely mill the intake to fit when you mill more then 30-40 thousands off.
As goes for what they will flow depends on who is doing them and on what flow bench. If you are spending that kind of $$ to port the heads then just go buy a set of AFR heads or Twisted Wedge and end all the b/s. Those heads only need work when you are trying to make ALOT of power. Those AFR/Twisted Wedge flow better out of the box, then those other heads fully ported by a expert porter.

05-16-2004, 12:00 AM	#1
whitepony Registered Member Join Date: Feb 2003 Location: ontario canada Posts: 165	what is better ok i have a set of stock heads but they have ben shaved 60 thousands of an inch and a 3 angle valve job and ported now would they be better then a set of stock gt 40p heads why or why not?? just need some in put thanks

05-16-2004, 10:06 AM	#2
tmoss Registered Member Join Date: Mar 2003 Location: Saint Louis, MO Posts: 634	Depends totally on the quality of the port work. I'd be worried about piston-to-valve clearance on heads shaved .060". The P head is a great low buck street head. __________________ Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/

05-16-2004, 06:12 PM	#3
MiracleMax Registered Member Join Date: Apr 1999 Location: Hayes, Va, USA Posts: 798	Well GT40p's flow 190 cfm out da box on top, average flow (over five points) is 149, your E7TE's probably flow an average of 130 to 135 cfm? __________________ 2002 5M GT (99% stock) 1991 5M LX (30% stock) patiently awaiting my satin silver 07 Mach 1, and don't forget the shaker

05-18-2004, 07:19 AM	#4
whitepony Registered Member Join Date: Feb 2003 Location: ontario canada Posts: 165	so what your saying is when i get the gt40 p's shaved 20thow and ported they will be way better then the heads i have on there now??? what u think the might flow the gt40p's after shaved and ported???

05-18-2004, 07:50 AM	#5
420nitro Registered Member Join Date: Nov 2003 Location: Rockford Posts: 596	Shaving/milling the heads wil increase compression. It will also throw your intake alighnment off. You will need to check & most likely mill the intake to fit when you mill more then 30-40 thousands off. As goes for what they will flow depends on who is doing them and on what flow bench. If you are spending that kind of $$ to port the heads then just go buy a set of AFR heads or Twisted Wedge and end all the b/s. Those heads only need work when you are trying to make ALOT of power. Those AFR/Twisted Wedge flow better out of the box, then those other heads fully ported by a expert porter.