195's didn't even exist when these engines were new. Engines running alcohol-based antifreeze got a 160, and engines with "permanent" (ethylene glycol) antifreeze got a 180 stat. 195's didn't come out until after the clean air act of 1968 when it was determined that hot-running engines with 14# radiator caps ran cleaner and warmed up faster to minimize air pollution during the first few minutes of operation. I can see no reason to run a 195 thermostat on any stovebolt engine unless it's running tight-clearanced hypereutectic pistons and other reduced clearances and super-thin oil like a modern engine.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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