head bolt pop sound
the water had to go somewhere, the holes in the LS block for the heads are blind holes that do not go into any water passages like the older chevy motors have. otherwise you would need a sealant on them.
Happened to me before, Cracked the block at bottom of the bolt. A hairline crack. We continued to finish it up. since nothing could be done about it. We ran it under boost an lots of spray. Never had any problems. I would say if it doesnt torque down at the final degree then you will have a problem.
flippin camaro? wasnt the cars fault 
i remember on my first head swap in the car i took tons of time blowing the holes out and even stuffing paper towels down into the holes to make sure there is no coolant.. however when i started tightening the bolts some of them i could feel getting spongy with a couple threads left. Pulled them out and there was still a tiny bit of coolant. You need to go slow and have a feel for it.
Also depending on where it cracked you may be able to use it still.. if it doesnt leak outside the block and doesnt leak into a oil galley you could probably throw some sealant on the bolt and it MIGHT actually be alright.
i remember on my first head swap in the car i took tons of time blowing the holes out and even stuffing paper towels down into the holes to make sure there is no coolant.. however when i started tightening the bolts some of them i could feel getting spongy with a couple threads left. Pulled them out and there was still a tiny bit of coolant. You need to go slow and have a feel for it.
Also depending on where it cracked you may be able to use it still.. if it doesnt leak outside the block and doesnt leak into a oil galley you could probably throw some sealant on the bolt and it MIGHT actually be alright.
See also:
https://ls1tech.com/forums/generatio...blem-help.html
Cwellman, run it, worse can happen is it end up being a bad block. Which you should just run till its done anyways. But on my 5.7 i had it did it on 2 bolts on the outer bolts of the block. i seen where mine was cracked.
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If you back out the new GM bolts without torquing them down all the way down and the orange loctite go off the bolt do you need new bolts or they're still good if you put new loctite on???
Last edited by Ronny_02_WS6; Feb 13, 2012 at 01:13 AM.
Need clarification: hole at the bottom of what? quarter of what is gone? Are you talking about the block with the head removed or the view with the head still on?