My 340 is running hot I think.. I need a sanity check.

trapster said

160 sounds way too low, not that this would have anything to do with overheating though, thermostats only set the minimum temperature not the max.


Check your plugs and make sure you are not running too rich or too lean.
Run it with the cap off, when it is cooler, and observe the water flow to make sure you are getting good circulation.

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I was fooled as youngster, thinking I saw "enough" circulation to cool properly.
Radiators can sometimes be cleaned of corrosion, if there's enough flow.
CLR can remove a lot of it, but I think it has
finished off the water pump seal for me when I used it. Maye take the radiator off, flush, then put the cap on, set it down on its face, then fill it with a gallon if CLR and wait a day or 3.