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A Chevy V-8 incorporates a full-pressure lubrication system with internal passages throughout the block. Engine oil from the pump travels through the filter into a 1/2-inch main gallery above the camshaft and then through a hole to the backside of the rear cam bearing.
Around the Block

A Chevy V-8 incorporates a full-pressure lubrication system with internal passages throughout the block. Engine oil from the pump travels through the filter into a 1/2-inch main gallery above the camshaft and then through a hole to the backside of the rear cam bearing.  View Related Article