PB Blaster has worked it's magic! A couple of good shots yesterday, and earlier this morning a couple of raps with a small hammer got it to move. More PB and a couple hours later, more taps and it is full open. Haven't wired it open yet, but for now it's stuck open. I'm gonna keep my eye on it and see what happens when the engine cools down. Took it for a 15 mile spin to burn off the PB, stop and go & highway, and gauge reflects reduced running TEMP! Thanks for the help gents!
1960 HT 352
TBird Registry 34042