Just twisted off an intake manifold bolt!!!

[ubtripn]

Hi Everyone,

So I was leaking oil out of the intake mainfold bolts on my 68's 350. I was taking each one out one at a time and applying Permutex high temp black silicone. When I got to the second to the last bolt on the passenger side closest to the distributor the head - the bolt just twisted off. 97& of the stud is intact in the hole, just the head of the bolt and 2 turns of threads came off. I know that I will have to deal with this later on but can I just leave the stud in since it is siezed and maybe put a little JB Weld on top of the stud? Then I could drill it out later during a rebuild. It seems to me that the worst that could happen would be to keep leaking a small amount of oil in that spot but I am a novice so what am I facing? Will the stud leak more now? Is the whole manifold not going to be sealed in the back now? Thanks for any help you can provide.