Mild hyd roller cam for magnum

You may want to define "mild".
Some folks on here think anything below .600 lift is mild.
I plan on running a Lunati HR grind that comes out to .513 lift with Magnum 1.6 rockers.

IIRC- the conventionally accepted wisdom is that .520 is about the safe max lift before machining the guides is necessary.

I think there is another grind that comes out to .518, but IMO that might be pushing it, unless you do the guide work.