Ordered a new cam today for the W2 408

What makes you think that you have to RPM like mad to make a tunnel ram work?
I don’t think that’s the issue or what he thinks he must do in order to get it to work. I think he is attempting to use a bigger cam for a higher rpm band for higher rpm abilities since he said he likes to run up the rpm’s where he can take more advantage of the intake for more power out of the combo.