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The last 5.7 I found for a build, had 4 main bearings spun and one cam bearing spun. Appeared to have been ran out of oil for some reason. Maybe oil pump failure or just lack of oil in pan. The cam bearing housing bore checked OK and the main bearing housings will be align bored/honed with new caps, as the original caps were very loose fitting.




I had one (5.7) similar. Spun main and spun cam bearing. The cam actually seize in the bearing. Had to pound the camshaft out.