Piston to valve Clearance?

[gvr4]

Putting together my 6-bolt with evo-9 pistons and its looking like piston to valve clearance is pretty tight, I'm talking something like .03 intake and .05" exhaust. (I have to bring my indicator home from work and get some real numbers).

Its almost common knowledge that a pushrod engine needs .08" intake and .100" exhaust, but I haven't even seen any recommendations for an OHC engine...

Any engine builders out there have a rule of thumb for piston to valve clearance? My build is nothing fancy and won't be spun higher than 6500 on purpose.