I found some more info:
Ok, that website seems much more accurate.
For my GT cam (Intake duration 210*)
@ 6k (I figure to keep the torque curve up even more)
@ 160* for the speed of sound in air (1220.81 ft/sec)
The correct length would be 103.77"
You could then divide that by a number to get close to the intake runner length you have now. (ex. divide by 10 to get 10.377")
So every 10th bounce will give some degree of ram induction...
Hmmm I gotta go pull my UIM to see what the length is with the HVII...