750 cfm carb on a 318

Do any of you guys run a 750 cfm carb on a 318 ? The reason I am asking is that I have a holley 600 now. I pulled my heads off a couple weeks ago because I had a bad exhaust valve
and low and behold my heads have 1.88 intake valves (675 heads). Had a valve job done and now re tuning. I am now at 69 jets in the 600 and it seems to want more. Is a bigger carb in order ?