Exhaust manifold removal & water jacket question?

Just a quick question for the small block crowd. If I remove the factory cast iron exhaust
manifolds from my 75 318, will I spring a leak from the cyliner head water jacket if an exhaust stud comes out with the mounting flange nut?... I dont want to drain the coolant if I dont have to...so Im asking here. :) I Worked mostly on big blocks all my life , and they will leak coolant out of their water jacks. What say you?
Thanks
HotRod20
Author: HotRod20