cams, PI heads and intake ?

I've seen it go both ways with these installs. I installed Comp 262's in my car with no issues and a friend did 270's with zero problems. My feeling is if you go with a less aggressive cam then you will be OK. Just from what I have read the issues seem to be with the more aggressive cams and in the later model cars. I haven't heard any issues with piston to valve contact in earlier models. Since you are installing heads too you may as well degree them to be on the safe side.