What type of piston do intend to use. Hyper or forged?
BBC at 10-1 compression is good for pump gas. Howards cams has some great hydraulic roller profiles
As for heads, 049 or 781's are good GM oval port castings but will need to be cut for larger valves and guide work which can add up to the cost of aftermkt aluminum heads. That flow better from the box and have less weight to carry.
Be more specific on your proposed build and several people here will get you thru with the least pain/$$$$