first of all, what engine is this for?
I have a clifford 4bbl intake with a holley 390cfm carb on my 54 235 thats in my 52 Chevy 3/4 ton pickup. As recommended by clifford I made some changes to the carb. So far so good, have yet to get it on the road but I have no doubts that it will do just fine. Just needs a bit of tuning yet.