Thermostat recommendation.

RustyRatRod said
The stock thermostat is 195. That's what I recommend.
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Be careful about making generalizations. Stock thermostats were all over the map:

1968 Plymouth service manual:

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1969 Dodge service manual:

upload_2019-8-1_18-1-58.png

The 1973 Dodge service manual:

upload_2019-8-1_17-58-35.png