Help with 340 compression + cam change

I am pretty sure of the pistons and the cc number, so I think The only other factor maybe pushing compression up some would be the deck height.

Thanks for the nudge toward the Howards cams as I've been getting the sense they might be a good choice. As well as the Voodoo cams.

Goals, well, more power under the pedal is always appealing! Two more aspects:
(1) I would like to feel I'm using these heads more, as I am pretty sure they have potential.
(2) and to a lesser extent I run my "baby" brother on the strip each year. (that should explain that part!)

Primarily, I've always felt I wasn't getting at this motor's potential. But there's no end to that rabbit hole is there?!!