2 Temperature sensors, on 360 intake?
Ahh!
Thanks makes sense.
Strange the picture in the OP is a 1979 intake. The second one is a late 80's or early 90's intake.
Was there an option for an electric fan in 79?
Maybe for an A/C evap fan in 79?
I briefly read somewhere as I was nodding off last night about an air temp sensor. But that wouldn't make sense in a coolant passage!