350 operating temp..

[PowerdbyChevy79]

whats up guys... couple questions.. first whats the normal operating temp for a 350..i usually run a tsat at 180 but right now I have the tsat out cause of engine break in... just wanted to get some opinions on engine temp... my engine before (stock 190 hp) had a 180 tsat and always ran at 190..the engine I just installed is a 355 with worked over heads and a thumpr cam and I have electric fans now ..
second I pulled a valve cover off my 68 to replace some leaking gaskets and I noticed in one of the covers (the pcv side) there was like white oil sludge inside the valve cover itself ....like it has been sweating.. ive never seen this before wanted to get yalls take on that..