another turbo post
 

just feeling out what the plansmay be for my car

i am set on building a non pi head engine build up and was wondering what kind of power i could see with a forged motor with pi intake and cams and a single turbo


what do u think and again i want to keep the nonpi heads just to be different and see what they will do

RE: another turbo post
 

anybody

RE: another turbo post
 

the only problem with that is the heads. if you upgraded to PI heads youd make so much more power. why short yourself. id say rough estimate with a stage 1 cam, NPI heads, 56mm turbo, full exhaust, forged bottom end, maybe 450-500rwhp at 10-12 psi.

RE: another turbo post
 

i was going to go with a 60mm turbo and i want to keep the nonpi heads just cause everyone says that i should change them, so i want to be a guinea pig to see what they can do

RE: another turbo post
 

i can tell you that your goin to be very disapointed in them. not that PI heads are much better but they are an improvement. your best bet will be to pick up a set of worked PI heads. a good blower cam and check into the svo intake. id call mph about havin them custom grind you a blower cam. youd make so much power that way. but do what you gotta do man.

RE: another turbo post
 

im not sure what you will be putting down...alot of different things dettermine that. But why would you not go with pi heads. Does anyone know what kind of compression a pi swap would make

RE: another turbo post
 

10.5:1

RE: another turbo post
 

the heads would up the cr to 10.5:1

RE: another turbo post
 

okay thanks...i was just wondering

RE: another turbo post
 

wait i thought the PI 4.6 made 10:5:1 and the NPI made 8:5:1