What I was referring to was the design as the cam bearings wear oil pressure to the engine is lost thru the cam bearings. If the block had been grooved in the center of the bearing bores, and each cam bearing had a metered hole it would feed only the cam bearing, the mains and rods would be feed thru the groove I talked about. No matter how loose the cam bearings got no pressure would be lost. The 300 has t0 deal with pressure drop thru the cam, lifter bores and the rods and mains this would have helped. kotzy
Ya lost me Kotzy with info about the cam bearings, oil journals and oil distribution. Were you replying to me about about something else? Of course I did remove the cam since I'm doing a complete stock rebuild, the bearings do show some slight wear but negligible. Not like the rods where most of the primary surface was about half gone showing what I'm guessing is a bronze underlay. BTW replaced them with some Clevite bearings, (always had good luck with clevite)
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