Good info! Why didn’t you read the manual in the first place?Mr. Don Hutton formerly known as Mr. Dutton,
This is from my connect and cruise manual:
Crankcase Ventilation System Description (LT4)
A positive crankcase ventilation system is used in order to provide a more complete scavenging of crankcase vapors.
Filtered air from the air induction system duct is supplied to the crankcase, mixed with blow-by vapors, and passes through a crankcase ventilation metering device before entering the supercharger. The primary component in the positive crankcase ventilation (PCV) system is the PCV flow metering device (valve or orifice). Vacuum changes within the supercharger result in flow variations of the blow-by vapors. If abnormal operating conditions occur, the design of the PCV system permits excessive amounts of blow-by vapors to back flow through the crankcase vent tube and into the engine induction system to be consumed during normal combustion. This engine ventilation system design minimizes oil consumption and significantly reduces the potential for oil ingestion during vehicle limit handling maneuvers. The LT4 engine utilizes an integral positive crankcase ventilation (PCV) system which is located in the Valve Lifter Oil Manifold Assembly beneath the Supercharger Assembly.
The Valve Lifter Oil Manifold Assembly contains composite oil separating baffles and PCV plumbing. Filtered fresh air is routed from upstream of the throttle plate to the engine oil tank where it mixes with crankcase gasses and is passed to both engine rocker arm covers. The rocker arm covers’ design shields rocker arm oil spray, thereby reducing the potential for oil being drawn back into the tank during backflow of the ventilation system. Blow-by vapors are routed from the valve lifter oil manifold assembly through a fixed orifice (7.5 mm) within a steel PCV tube, then into the underside of the supercharger near the front of the valve lifter oil manifold assembly.
The following parts maybe purchased to assist in PCV connection, see figure 4. The system must supply filtered air to the PCV system. Connection must be between the Mass Air Flow meter and the throttle body.
Tube-PCV (1) 12644356
Tube-PCV (2) 12668976
Tube-PCV (3) 12647125