E-303 cam advanced 4 degrees with boost?

dont think so because your engine need to breath on top end and you will have torque anyway because you are under boost and you need RPM's

The later the intake valve close... the MORE boost is allowed to enter the chambers.. I usually advance the cam when I am running N/A or N/A and then spraying.. but boosed all the time.. the E is on a 110 ICL !! advancing the cam 106*.(. 4* advanced) will allow the intake valve to close earlier and build cyl. pressure sooner... Thus more torque!! Retarding the cam 114* (4* retarded) will keep the intake valve open longer and allow for more boost!! On the E cam I suggest setting it in dot to dot ( 110 ICL) and use that!! IF you want MORE power thru the boost then retard the cam more... I suggest run the engine first.. and THEN make the changes to the cam phasing... cool??

Just me.......................

Thumper

As a rule I have never advance the cam in an injected 5.0 . I was always told that was a no-no. The 5.0 is a pretty low reving motor as it is. With a blower why would you need to improve bottom end? A 106 centerline is a little short for a car with a 5 spd. Do you have a 5spd? I guess if you have an automatic it might not be the worst thing you could do.....