Manowar,
So a STOR configuration? Damn, I was hoping for another answer. Since it is together and in the car, re-machining is not an option for me. Guess I will go with the ceramic sealant first before I take them out, again.
I'm getting somewhat tired of dealing with weeping. Its not creating a big deal, I'm just a bit over anal retentive on leaks. Well, and squeaks too. I've only used maybe a cup in 800 miles and I'm not sure if all of it has been from the plugs since I'm using a 7 lb cap and it does lift. Initially I was using a 15 lb cap and the plugs leak severely. System pressure seems to be running higher for the same temperature which brings in the next topic.
I've noted quite a difference in warm up time with the alloy block. It would be interesting to compare coolant system heat rejection differences between alloy and cast. Could possibly quantified by measuring thermal input, T-stat cycle time, coolant system pressure, and coolant flow rates at a given load just to get a comparison. This is way over simplified, so don't beat me up. Due to the increase in coolant system pressure there is power loss. Question is the significance to the overall cycle and as pointed out does it really make a difference for 500 HP.
I suspect that alloy heads have a more significant role than a alloy block due to overall exposure time.