Head hole? What the heck is it.. plz help.

On the 5.0 heads .. with emissions (86 heads as well as e7te-pa) what is the perfectly round - circular hold on the intake manifold side of the head that is in the middle of the head. An emissions port? It doesnt go all the wall through -- only about eh 1.5 inches in then stops.. what is this? Is it important? When i swap out the FI manifold for the carb setup -- 1/3 of this hole shows above the carb manifold.. all other ports/holes line up.

Any ideas/answers? I really hope that this thign doesnt mean/do anything so that I can just forget about it and sleep better at night. I have flipped through the manuals and cant find anything -- i guess im blind.

Regards,
Gered

Bumpski

Interesting cause it doesn't even go anywhere -- so in short can I just install it with half of it showing or is it going to cause an exhaust leak -- how do I go about this?

Hah -- yeah a lot of people didn't read the whole post on them 'other' forums. and they said the same thing -- no from my previous experience it doesnt matter if like a 1/4" of it is showing but i am trying to figure out what exactly it did/does.

Thanks for the info though!

-G