FE Overheated Suddenly Problems Following.

[kdavies3]

Hi Guys, I had a disaster over the weekend.
My 1100 mile engine suddenly cooked itself, no previous symptoms.

Compression check revealed decent compression on the right hand bank.
Very poor compression on 5&6 on the left.
So off with rocker covers.
Holy **** what's going on here then?
On the left hand bank the rocker shaft was loose!!! Not broken but loose.
The Helicoils in the Edelbrock 60069 head have pulled out the rear two completely and the front two partially.
I have rocker studs and nuts already, I'm sure everything was torqued correctly during the build.
The head has been very hot you can see that by the oil staining.
The head bolts were very loose next to no talk at all especially the central ones. (they were all originally torqued to spec.)
The right hand bank looks all OK no heat staining and no pulled Helicoils.
Haven't yet checked the head bolts.
I guess the next thing to find out if the head can be salvaged or not?
I haven't yet checked but it's almost certainly going to be warped as well as the coil problem.
I'm hoping the block is OK and not warped or worse cracked.
No evidence of bore scuffing or scoring I'm pleased to say.
Now it's chicken and egg, did the overheating cause the shaft to pull or vice versa?

Did head gasket go first and start the ball rolling?
I haven't used them myself but I wonder if "timeserts" could be used to repair the threads?

Water pump looks OK, thermostat is very easy to push against the spring I suspect the wax has gone.

Any advice greatly received.
Thanks