checking for cracked head or bad head gasket..

well well well I think I found the problem and feel like shooting someone! read below
from MAD DART "Per HUGHES and for what that is worth, Tim over there says they have running engines using the 519SD and that the 1008 gasket will not fit.

Yes the gasket will need to magnum based.........kind of gets me pissed a bit. Don at 4secondsflat is helping me to see if Cometic will change out their die program for the MINOR changes that would need to take place.

I do have the 519SD gasket and the Cometic side by side. There is only a minor difference in the areas posted earlier. Good thing I found this out or I would have had a MAJOR leak right at break in of the engine. That would have sucked!!

If need be I will run the Felpro, just didnt want to if I had a choice is all.

Also after working on the Magnum heads I would not ever go this route again......just my opinion!"

"The water jackets on the intake side between 1&3 and 5&7 on the intake side will not seal off. The cometic gasket embossing is not large enough to seal this area........It is the same on the opposite side of the motor same place.

It WOULD FOR SURE leak like a stuck pig if I would not have caught it.......

The Felpro's have a blue seal that goes right around the water jackets.
They would work but I just dont trust them. I have friends that push them out on a regular basis."