okay,

so timing at 15*, 18* no change
I see water kinda move through the radiator when the T-stat open but it certainly doesn't rush. I have another water pump sitting on my 540 that isn't running at the moment.


I may steal that and see if the problem gets resolved.

this is my dads car... he said he has had this issue before. he said it always overheated. This is the 3rd radiator and the same pump and housing. aftermarket aluminum, but heck maybe its no good.

Thoughts?