GM Questions

gm 92 series suffer from spinning main bearings,open up the block and needing tunnel boring,still a great engine just one problem i have seen a few times,jake problem as per pictures above the 7/16 lock nuts on the oil feed come loose and popping the o ring common usually droping and oil pressure (oil pressure gauge a tell tail sign)i have rebuilt 53 series 71 series and 92 series and am a gm man at heart,i have driven cats cummins benz and theres nothing like a screeming gm,cheers adrian