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Originally Posted by MIKESAD50
Are they puller or pusher fans?
If they are puller fans are the hooked up properly and pulling air from front thru radiator out the engine compartment?
Do you have have any cool spots in radiator core? if so you have a plugged radiator. check when hot.
My GMPP comes on about 200-205, what are the fans rated at?
Some times you need vents in the shroud to allow more flow while running down the road. alot of cars have little rubber flaps or doors that open up while driving down the road.
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These are puller fans, not sure the rating on the fans though. I will ask RND (the folks I got the setup through) and see what they are to report back.
Very interesting point about allowing proper ventilation, I will run this by RND as well. I think one of those laser temp tools might detect a cool / hot spots. I will pick one up and take some readings.
Thank you for all the ideas