Little update.
I got the head off the front (2,4,6), clearly it was 2, from the looks of the gasket it was going bad for sometime, and got worse when I changed the thermostat and started leaking coolant. The head is in good shape, no warping. Everything looks good just normal ware, I didn't even have any problems with bolts, everything came right off, will besides the fuel rail was a little bit of a pain and the LIM took some tapping and me getting climbing on top. Now just to get the other head off, then clean, clean, clean, and maybe I will clean some more, its only 100k of crap. And seeing how I have everything apart, I am going to paint the valve covers and UIM.
Funny though, the dex-cool cleaned the piston, all most no carbon on it, all the nasty stuff was on the head and valves.
I think beer should be on the list of things you need to change a HG.
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