1981 buick regal low oil pressure

1981 BUICK REGAL
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CRUSACARGEN
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1981 buick regal with a freshly rebuilt 3.8 v6 2 barrel with all new or reconditioned internals, brand new oil pump. car has 76 miles

here it its i recently rebuilt my motor along with my engines teacher and after its completion and installing it into my car i put in a mechanical oil pressure gauge and i worry because when started the gauge shows 60 psi for 1 min and when engine is warm it drops to 10 psi but when i rev the engine the oil pressure will drop below 10 psi and if i continue it would drop to 0 psi

please help i will appreciate anything i can get
Aug 11, 2007 at 9:01 PM
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SERVICE WRITER
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I got your PM, I wish I knew more to give you an answer, but I offer this:

Obviously don't run it anymore than if there is a test to perform that would require it. Bootdog would be a good mod to ask-PM him and ask to post a follow up here if he would be so kind.

One thing I would be concerned about is that the parts you bought were correct. Mis-boxing and mis- application can be a real problem. Try to confirm what you can. Did you stay stock, or try to "enhance" the motor? Make sur your gauge is good.

I want to thank-you for sending me a PM as I have learned from this post.

From what I see assuming the parts are correct, is possible Mis-installation of that may be somthing bent getting the pump in, a pressure relief valve that is stuck open or bad oil filter.
Aug 12, 2007 at 6:59 PM
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OLDSSTARFIRE
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Did you ever figure the cause of this? I have exactly the same problem. Low oil pressure on a freshly rebuilt Buick 3.8 V6.

Thanks,

Jeff
Apr 13, 2008 at 7:42 PM
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