oil pressure problem
It happens every now and them to LS motors, but the cam bearing will walk out and uncover the oil hole. This caused my oil pressure to drop to 5lbs at idle and 15lbs max. My rear cam bearing walked back. I pulled the motor and check all the bearings and they were fine, replaced oil pump and o-ring, still the same problem. Pulled the rear cover and my cam bearing was hanging out the back. Checked the rest and it was only the one. Put and new bearing in and fixed my problem.
May not be your issue, but something to check.
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