Stagger the jetting for the manifold, don't use the same size jets in the outboard carbs My carbs had the stock metering plates modded to accept # 6 brass set screws drilled to those numbers, which I opened up .004 on both sides to make it richer. If your using Holley jets or Holley air bleeds as your jets look at the hole size and go from there Remerber though it is way safer to start off richer than needed instead of to lean
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
My carbs had the stock metering plates modded to accept # 6 brass set screws drilled to those numbers, which I opened up .004 on both sides to make it richer. If your using Holley jets or Holley air bleeds as your jets look at the hole size and go from there 
Remerber though it is way safer to start off richer than needed instead of to lean 
