I posted a thred awhile back about the same problem, WATER IN OIL, I have an 89 OMC 4.3l V6 and really have not found the problem but am beginning to think cracked block. My manifolds were replaced a couple years ago so hope it is not them. What I want to know is if I can use a regular GM 4.3l V6 block for a swap?? Can it be the vortec or not and what I need to do to change it, or if anyone knows where I can pick up a block?? I reall could use some guidance on this matter!! Thanks
