A friend of mine wants to sell me a brand new, never been used eddie 750 cfm carb to put on my stock chevy 427. I'm currently running a puny 570 cfm holley street avenger. Im trying to achieve that balance so that im not starving my motor and getting poor fuel economy and poor performance; but at the same time I don't want to drown it and get the same problem. Will the 750cfm be too much???