with all the work you're putting into this toy, have you considered just changing the damn pistons? you could lower your static compression and increase your ability to handle some minor detonation really easily at the same time. i don't understand why you would do all this work with the stock pistons and CR as changing pistons on a SBC is just as easy as swapping the cam, which you already did. you could just quickly ball hone it and skip the machine shop too if you really wanted to save some money and it would probably be fine. might only take an afternoon and a couple hundred bucks to reach your boost goals on pump gas. i don't think there is a way you're going to get 8psi or higher reliable on that thing with pump gas and the stock compression ratio, and if you do you're going to have to retard timing so much you'll be making negative gains