hey guys,Im putting together a new 5.0, on the throttle body where the idle air control valve bolts on to the body there was a spacer between it that has 2 allen set screws when I took it off like dummy I didnt check which allen was top or bottom you can flip over either way.
1 what is it
2 what are the screws for
3 what is the proper adjusting procedure
4 does it need to be there, my other 5.0 truck doesnt have it?
please help.