Thermostat at 180F or 160F ?

FWJMember

I was reading in my new Ford Cleveland 351 Engine booklet by George Raid a comment on the side about the thermostat to be used which is not in line with my thinking. Would like to here your (practical) experience here:

The comment he made was: "I suggest you stay away from a 160-degree F thermostat". He made that comment with no further explanation, unfortunately.
My perception and the knowledge of my engine builder states of course use a 160F thermostat. They apply that temperature as well on the dyno to yield the highest hp results. If the cooling temperature is hotter the engine performance drops.

So any explanation why a 180F thermostat should be used "by all means"?

3/13/2511:46 AM

Original Post

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