LS6 Intake Valley Cover / PCV CatchcanDecember 24, 2010
LS6 Intake Valley Cover has a built-in catch can setup for the PCV system to reduce/eliminate oil vapor from being sucked back into the intake tract. This is a good performance/preventative maintenance mod that also reduces the amount of lines/potential vacuum leaks from the normal LS1.
Stock LS1 PCV setup:
Simplified LS6 PCV