Update - mod shroud to include 95% of radiator... seemed better....still temp creeps up to 230F, but if I set idle high (~ 2500) it will bring it down to around 210.....still pushing
antifreeze out, about 1 1/2 qt. Radiator cap inline with output, high location...may need expansion tank to accommodate expansion when hot.
... 6 blade flex fan, good shroud - pulling fine - better than most production shrouds, mild upgrade on engine...(when I had head off, everything looked ok...no leaking gasket)
I guess I'll get an aux electric fan...and see what happens....yes there is a plate behind water pump.
still doesn't make sense to me.....
Any more Ideas?????