[QUOTE=Svenne100;189623]Btw, intake ports should not be polished, preferably they should have a rough surface!![/QUOTE

I have been around motors for 33 years now & probably have built over a 2000 motors in my time, it all depends who you talk to mine gave me 3 more HP so something must have worked.

The Raptor boys are getting up to 124 rear wheel HP from their Raptor motor with CNC ported polished ports.