318 with 340x heads sluggish

I don't know where you got "360 heads are 68cc" but few and far between that I have measured have ever come in that small. They are all usually in the 72-74cc area. What they are supposed to be and what they are, are two different things.

All of these are moot arguments anyway, since we don't know real numbers.

And I also agree compression is not a huge deal here.......BUT if it is in the 7s and I am pretty sure it is, plus that cam......well........something needs to be done.

JMO.