Quote:

Do you have an OE waterpump housing? Some of the aftermarket housings have restricted flow passages.



Hmmm... I am running into a similar dilemma. (sorry if I am hijacking thread)
Running a '69 440+6 which I recently installed a set of Eddy heads and .557 MP solid cam. For cooling I have a 440 source waterpump and housing, recored original 3 core radiator and an MP viscous clutch with shroud.
I do notice my temp climbs pretty quickly to 190 deg and starts to climb to 220 if I sit in traffic or get on it a bit.
A friend suggests running dual 10" electric fans because he said he had the same issue when he hot cammed his 440.
I'm also wondering if the location of the temp sensor means anything. It is not located in the same location in the stock housing, rather on a tapped port on the left sode of the engine.

Any thoughts?