understanding a low oil pressure 360

If that guy, whoever he is, thinks oil pressure is related to rod side clearance, then he should be called a "idiot" not a "guru" that IS not your problem!
well since he is 80 and a world record holder at the salt flats (the engine he built) and in the hall of fame for his contributions to the racing community (Washington state) and building mopars for 60 years. maybe you can lend your knowledge to the community. otherwise moving along is a good path.