Cam is 238/240 idles around 875..and im reading about 67kpa at idle..is this normal?

 

That's a pretty good sized cam, so yeah that's probably right.

 

Ok. I tightend down the intake mani and it dropped down to about 64

 

yeah that about right for that cam...... that cam is going to carry low idle vacuum....... so being that regular atmospheric pressure is 105 kpa, and anything below that is vacuum, your setup sounds right because a smaller cam would read lets say 50 kpa or so, but your cam is large so therefore your idle kpa will be higher