Pontiac V-8 4 Bbl PCV System Diagram - Positive Crankcase Ventilation Fig. 6D-2

This document is a labeled line-art schematic (Fig. 6D-2) showing the Positive Crankcase Ventilation (PCV) system layout for a V-8 engine equipped with a 4-barrel carburetor. The illustration depicts the top of the engine with the 4-barrel carburetor mounting pad (four venturi openings visible) on the intake manifold, and shows the routing of the PCV hoses. Callouts identify four components: the intake manifold, the check valve, the check valve connector, and the push rod cover assembly. The drawing shows the ventilation hose running from the push rod cover assembly area, through the check valve and check valve connector, up and over to fittings at the carburetor/intake manifold area. A reader can learn how the PCV hoses are routed on this V-8 4-bbl engine, where the check valve installs relative to the push rod cover, and how the connector seats into the cover assembly. The figure appears to be taken from a factory service manual section (6D numbering suggests an emission/crankcase ventilation section). No part numbers, torque specifications, or explicit year/model text appear in the scan; the applicability is inferred from the uploader's album context (1967 Pontiac Grand Prix).