Ford 351 Cleveland V8 Oiling System Diagram - Oil Flow Sketch (Mains, Cam, Lifters)

This document is a simple line-drawn schematic (sketch) of an engine oiling system, showing oil flow paths through the engine block. Oil enters at the bottom right of the diagram at the point labeled 'Oil In From Filter' and is routed to five main bearing journals, labeled #1 through #5 and collectively marked 'Mains'. From the mains, passages (several marked with the letter 'A', and the #5 main marked 'A B') feed upward. Two horizontal galleries run along the top of the drawing, labeled 'Driver Side' and 'Pass Side' (passenger side), each shown with a row of cylindrical features (representing lifter bores) fed with directional flow arrows. A separate passage on the left is labeled 'Cam', indicating the camshaft oil feed branching near the #1 main. Arrows throughout the sketch indicate the direction of oil flow from the filter inlet, through the main bearing feeds, up to the lifter galleries on both banks. Based on the album context (uploaded among 351 Cleveland reference documents such as head gasket modifications and 'clevorholes'), a reader can use this diagram to understand the oil routing/priority in this engine — mains and cam fed from vertical passages, with the lifter galleries supplied along both banks.