I also believe that is true and try not to use the head located sending unit. If mounted in the lower thermostat housing, the temp would be more "even" or not fluctuating as much. One problem is the intake line can also "cool " that same area.
Tom, would something like this be a better option. I am assuming that this top port is the return from the heater (correct)? Or should I move it down to the lower port where I have my return from the heated intake?
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Am I correct in assuming it is best to pick up the water temp. from a location as close to the top of the head as possible?
Because I also thought about picking up the water temp here at the supply for the intake but seems like the metering block would be alot of weight hanging on such a small fitting coming out of the block. I guess I could make some kind of support bracket and mount it to the bell housing bolts.
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