Oiling System
Oil under pressure is forced from gear-type oil pump to a full-flow oil filter. A by-pass valve is located in oil filter mounting base.
Oil flows from filter to main oil gallery. Branched passages from main oil gallery direct oil to upper main bearings. Internally drilled passages in crankshaft route oil to connecting rod journals.
Oil flows through each connecting rod, which disperses oil flow through a squirt hole in the rod. This dispersed oil lubricates camshaft lobes, distributor drive gear, cylinder walls and piston pins.
Lifters receive oil directly from main gallery, which is directed through hollow push rods to lubricate upper valve train area. Passages from main gallery lubricate camshaft bearings. Front camshaft bearing directs oil through camshaft sprocket and slings oil to lubricate timing chain assembly. See Fig 1.