Another head gasket question

[Ne-max]

Did head gaskets on a LLY this last week. Took heads in and had them cleaned, pressure tested and resurfaced. I cleaned up the block reall good and even put a straight edge on it. Was nice and flat. Used lml grade C gaskets and arp studs. Last night I got it together and it started right up. Now comes the issue. Overflow tank was bubbling right away. Put cap on and upper hose got solid.
Today I tore it back down. Both gaskets was installed correctly. No damage to gaskets that I could see. Whole intake on both sides had coolant in it and all cylinders was half full.
Im pretty sure its a cracked head myself. Is there a certain spot the crack?

 

[Ne-max]

Heads ended up being cracked around the injector holes.

 

[Burn Down]

Both?

 

[Ne-max]

Yep

 

[ikeG]

We did that to one head pulling in 2013. Would only fill the cyl that had the inj bore cracked with coolant, not all of that bank. I eventually found that I hadn't completely torqued that nozzle on and it would leak at the nozzle nut. I blamed that for the cracked head.

 

[jwilliams198]

Same thing happen to me this summer. Both of mine had cracked injector bores

 

[DIESELMAFIAPER.LB7]

They must have not pressure tested them very well the first time :roflmao: