Cam lift ?

I used Egge 10.5/1's in my 273 build and with .030 shaved from the heads to make up for the fat Perma-torque head gaskets, I ended up with .395 piston to head clearance and .188 exhaust and .200 intake piston to valve clearance @ full lift with zero lash. I'm using a Isky #390144 (E-4) cam with .425 lift and 260 duration installed at 108 deg. It wouldn't hurt to put a little bigger lift cam in there. My ..425 lift cam ended up .407 exhaust and .401 intake lift (actual lift measured at the retainer on #1 cylinder.) When the books say the rockers are not truly 1.5:1 ratio that's true. Mine were 1.438 and 1.416 ratio.

I will have to look and see what clearance is recommended but I would imagine .100 would be good. I will post info if I find it.