Originally Posted by Los_Control

@ol' grouch maybe I'm just looking at things wrong or not explaining myself to original poster .... My first post I suggested to hookup a mechanical gauge if you want to know what your oil pressure is.

Let me try to explain it this way .... I'm slow, I should have thought of this earlier.
I have a daily driver 1991 chebby truck with a 350 and have driven it since 2018. It has a oil pressure gauge with a sending unit. I can tell you the gauge rides from middle to slightly above ... it actually does move a bit when above idle.


Maybe I watch too many Hot Rodders on youtube .... I do not want to race, but interested in watching others build their cars and race them.
With a stock oil pump they can run the top end on the dry side when wound up to 6K rpm going down the 1/4 mile.
Or with a high volume pump and a stock pan they might run low on oil on the bottom end .... A deep sump pan fixes that.
Extreme cases but that is what I think about ... it applies to me if am out on a back dirt road and get stuck in the mud or snow and try revving the motor to get out .... I'm fine with a stock pump.
High volume pump is a tool to be used in the right places.

Originally Posted by Los_Control

I think the 28 psi sounds great at hot idle, 25 would be fine .... if it was 20 ... well she aint no spring chicken but she does just fine ..... Some older engines from the 50's 5 psi at hot idle is fine.
Typically low oil pressure at idle is from worn bearings. ..... I would not call 28 psi at hot idle low. I would call that fine.

So what the heck is going on with 40psi at hot idle? Is this a brand new rebuilt with new bearings and just getting broke in? ... 40 seems high ... unless you have a high volume oil pump for racing .... which is a bad idea.
Are you sure your gauge and sender are correct? .... I would like to check it with a mechanical gauge to see if they match.

Curious what readings you get cruising at 50 mph.

Originally Posted by Moparite

The OP hasn't been back since his one post. Would be nice to know details to give an informed opinion.

Originally Posted by Moparite

How may miles on the motor and what weight oil is in it? Cold and hot psi. Idle and at rpm.

Originally Posted by dog1974

i think i might be going insane then cause it’s not showing 40 psi so i may have just looked at it wrong when i saw 40 psi. and at 50 it’s at 32-34 psi from what the gauge says.