I am building a 408 with Stage 3 LQ9 heads and a Magna Charger. I was planning on a SCR of 9.33 to 1. I then started reading about DCR and now am a litle confused. When planning should I set my boost using SCR or DCR? I am using a GT2\3 cam with an IVC of 66 deg (advertised not @.050). The DCR with this cam is 7.9 to 1 with a SCR of 9.33 to 1. Can someone help out?

 

The cam will work fine,you will make about 600rwhp at 7lbs of boost with a 2.75" pulley.You might consider upgrading to a mp122hh if want more power,as the mp112 will be the limiting factor on your setup.