The Stovebolt Site Forums The Shop Area Engine Shop 216 Intake / Exhaust Manifolds on a 235, help?

I have a 1954 3604 with the original 235 engine that has had the intake and exhaust manifold swapped to the 216 manifolds. I read in another post that a 216 carb on a 235 would run too rich ( fuel mixture ). A 216 carb will not install on a 235 intake manifold so the discussion must mean that someone else has a similar situation. Can someone clarify the "rich" mixture issue and advise if there are any solutions other than getting the correct intake/exhaust manifolds and correct Rochester B ( yeah I know, get a Carter YF2100 ) . This issue is aggravating since I have a very nice functioning intake /exhaust manifold and carb....but the exhaust pipe is sooty black so I'm thinking its running rich. Ok, open the floodgates of knowledge and experience and give it to me straight!