There's alot going on here....
stock cast pistons, what ring gap? Assuming no anti balloon plate on the converter? Going to put 1000 cfm worth of carbs on a stock 360 cid engine? And ya, asking alot of a 7 inch slick if you're going to just hit it off the line.
Yes balloon converter , as I understand it, the engine will only use what needs with large CFM, to a point, the dual quad 383/343 dual set up were 500 CFM, I'm only 23 cid off the 383 cid, that, plus I have better intake, heads and headers
Ring gap, I've run 150 shot plenty of time no problems, it's in the tuning, many are not willing to do it
340 six pack 1350 cfm not possible to use all of it (yes, under extreme circumstances, possibly)
