Help with LS3 connections and PCV

[derotoreut]

I'm still working on my LS3 swap and I'm trying to understand what is the correct way to connect the valve cover fittings and other ports on my engine. I am overwhelmed by trying to read and understand discussions about PCV systems, catch cans, etc.

I have attached a couple of pictures of my engine and circled the areas I have questions about. From trying to search online, it seems that everyone has opinions on how these Gen IV engines are supposed to be set up. If anyone can offer any assistance it would greatly be appreciated.

By the way... my engine is a GM connect and cruise that I bought quite a while ago (without ECM). It's a 6.2L Gen IV, 376/480HP. I am running Holley Terminator X Max with Dakota Digital's BIM-01-2-HLLY: Holley EFI Interface Module for Holley Terminator X Max.

Also, my engine has a flexible tube that appears to run from the valley cover to the TB. Do I keep that as is?

What is this used for? And do I need it?


How do I connect pass side PCV fitting?


What about these connections?