Coolant pipe

I just rebuild my 86 bullnose
302 efi.  I am not using the pipe to mount ect sensor ,
Can I install an adapter to screw one to intake ?

Welcome!  Glad you joined.  

We were hoping for a bit more of an introduction of yourself and your truck.  I take it from your "handle" that you are in Hawaii.  Right?  We have a map (Bullnose Forum/Member's Map in the menu) and we could add you with a city or zip.

And how about some other info?  And pictures?  We are a community and like to get to know each other.

As for your question, while we can try to answer it here, the best place for it is in the main section.  That's because more people will see it there than here.  But let's take a shot at it here.  I am not familiar with the "pipe" you mentioned, but you should be able to install the engine coolant temp sensor anywhere that has a flow of coolant before the thermostat opens.  So I do think you could install it in the intake manifold where the coolant passages are in the front or back.

Welcome!