Cams for PI heads on a Non Pi Block

[CVPI GT]

im looking for the highest lift cam i can use for my 99 5.4 pi heads that im puttin on my non pi block i will be replacing all the valves, valve springs retainers ect wile im there i just did not know if there would be tapping isues if i used to much of a cam.

thanks

PHILLIP

 

[CobraRed_96_GT]

.550 i would think. Depends on the cam as well - i know stage II CMS's are fine.