How much Power?

[98 Roush]

Whats the max HP that P.I Heads will allow. I'm getting a shortblock build by MMR and going to be running a Vortech supercharger. Is 500wrhp attainable with stock non ported P.I Heads. Thanks

 

[KLeech]

Yes it is, PI heads flow pretty decent. Getting them cleaned up usually nets some good gains though. What's the rest of your setup?

 

[98 Roush]

I got stock pi heads with stage 1 trick flow cams long tubes off road xpipe aluminium flywheel pretty much full bolt ons.