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Reply to "Oil supply Issue from previous rebuild car 4907"

Matt, I would guess there is a restrictor up inside the oil passage (#1 bearing) in that picture. You have to drill the hole larger in order to install the restrictor up inside where it belongs.

My suggestion besides restrictors for all 5 cam bearings (0.062" restrictions), includes:

(1) Tappet bore bushings (also with 0.062" restrictions)
(2) Fully grooved main bearings
(3) Proper bearing clearances (Main bearings = 0.0020" - 0.0025". Rod bearings = 0.0025" - 0.0030"). Using either 10W30 or 20W50 oil with this spec.
(4) High capacity racing oil pan with baffles, hinged doors, windage tray, scraper.
(5) Standard oil pump, standard oil pump drive shaft.
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