I recently purchased a 1972 el Camino with a 350 that originally had a 2 bbl but was changed to a 600 cfm Holly. The previous owner also put in a Delta Cam for which I can get no information from the manufacturer, the guy I bought it from indicated that it has a duration of 278/288 and lift of 388/410. I would like to build this to 300hp +. I'm planning on headers and an Elderbrook Performer EPS intake.
Questions:
1 any comments on this cam from what info I have?
2 how can I get better performing heads without breaking the bank or are the stock ok.
3 I think I've got 8.5/1 compression ratio (stock) will this accomplish what I want or do I need to upgrade?

I'm retired and on an extremely tight budget!