Just this past weekend I deleted my air injection system mostly because of all the exaust leaks it had..now im hearing a tick or knock from around the flywheel area. I replaced a lot of the vaccume lines that were bad including the shift module on my 1978 305 CID engine. Is there other vaccume lines I missed? Also I bought a new edlebrock air cleaner what do I do with the vac lines coming from the trans moduelator and the one from behind at the bottom of carb can I plug any especially the 2 nipple one on the intake manifold.

 

A loose torque converter bolt will do it.
I bought one a while back cheap due to this. Man was selling it as "runs but engine knocks" I looked at it and it sure enough knocked but only in drive or R, not in park.

I bought it, got time to mess with it, got under the car and checked the converter bolts, 2 was loose. Tightened them and the knock in gear went away.

Also a cracked flexplate will do it.

Exhaust leak at the rear or bottom will too