Need some help from the cam/head guru's
 

can someone tell me how much i can mill stock 241 heads before i have to fly cut the pistons?? the cam card is attached below. my goal is to not to have to flycut and wanna keep it safe

That seems like a pretty sizable cam to me, I am not sure that I would recommend milling the heads more then a clean up mill to be safe on piston to valve clearance. If you are trying to get extra compression I would seriously think about fly cutting and then milling the heads.

Thannks that's kinda what I figured.

can someone break this down for me to the normal lobe seperation numbers