Do the newer magnum style thermostats flow enough

Woods74 said

Exactally, don't buy into the 'designer' thermostat temperatures. 195 or bust. Flex fans and blinker fluid fall into the same category.

Click to expand...

If it stayed at 195 I would be ok with it but it doesn't. To make a long story short I've been running a clutch fan and I've tried a couple electrics. I think I have a water flow issue, I'm running a 180 thermostat but my lowest temp I see is 195. This is with a clutch fan down the highway on very cool days. if the system was working properly it should be running around 180.
New rad and new water pump, changed thermostat, no change. I here there are hi flow t stats, thinking I might try one if I can find one.