1bbl Aluminum intake

It appears like some type of electrical sensor, perhaps for inlet temperature. My guess is it was part of the electric choke controls. In the late 1970's, there was a thermo-resistor on top of the intake. Perhaps they moved that down into the air flow by ~1980. I vaguely recall reading that those superlight aluminum intakes were used on trucks. I have one (not installed) and it very light and fragile w/ perhaps the ugliest welds (e-beam) seen on a production part.