[Di0z0r16]

Hey guys i know this isnt about any 40s or anything but i have a a 1982 chevy blazer with a chevy 350 and it wont pass smog because my egr passage ways are clogged. so i took off my intake manifold and cleaned that out so there should be no more cloggs in it. then i started to look at my heads and i found that the passagways from the manifold gose to no where. so i was wondering if any one knows how the egr system works and where they go. i think that there should be holes milled in the heads on the motor but mines doesnt.

if any of you know of this kind of thing or has had the same problem and could help me i would like the help.
Thanks