I don't think I have ever heard of grinding a cam for the tunnel ram intakes confused shruggy
I remember back when Modified Production was still racing the cam design and grinds where critical on the short stroke, small C.I. , drag race motors with tunnel rams according to those guys racing those motors back then shruggy
In todays world I look more at the application the motor will be ran in than the intake manifold, maybe that will all change when I go to racing a B1 motor with a tunnel ram with two 1050 CFM Dominator carbs. work

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)