[Chifo Jr]

Thanks for the replies... I've noticed you are the Cleveland experts here so I appreciate your input. I'll add some more information: When I did the initial start I utilized a shop fan and was able to run at 2000 rpm the first 20-30 minutes with the temp staying below 200. While I did the engine build some 12 years ago I really wouldnt think that I would have placed the head gaskets on wrong. I am pretty meticulous with details. I will remove the T-stat housing to verify that the brass ring is in there but I do recall seeing it there before. As far as the t-stat is concerned, one of my shop guys picked it up at Pep Boys and more likely than not just got one off the rack. This could well be part of the problem. There is no spiral internal to the radiator hose but most of it is stainless tubing with just two short sleeves to transition to the block and radiator so I would be surprised to see collapsing over such a short area. Any other thoughts are appreciated.

PS: I have tried to be sure that the air is completely purged but am having some difficulty determining this. Also what is the proper rotation of the water pump? CW or CCW?