Welcome to the world of Pontiac ownership. They are notorious from running hot.
You will find a LOT of discussion about thermostats, blueprinting water pumps, water pump divider plates, the use of aluminum radiators, HD clutch fans, fan shrouds and adding the metal and rubber baffles that were standard on 400 and A/C cars.
I went will all of the above as I was originally putting my car together in the Phoenix area. Pushing 100 already? Man, I do not miss that.
2012 Mustang Boss 302 #1918, Competition Orange. FGF replacement 2006 Mustang V6 Pony, Vista Blue. Factory ordered. 2019 BMW X3 (Titled to the wife, but I'm always driving it for her. So I'm claiming it) Old projects, gone but not forgotten: 1967 FB 400, original CA car. After 22 years of work, trashed by the guy who was supposed to paint it. I had to sell it. 1980 Turbo Trans Am 1970 Mustang fastback, 351C 4Bbl, auto 1988 Mustang GT, 5 speed 1983 F-150 4x4, built 302 1994 Chevy K2500 HD 4x4, 454 TBI
