Olds oil pressure advice wanted

[CHRIS.O]

Slim chance of this but you may want to verify the oil pressure gauge is good, no kinks in the line or anything like that.

 

[Peter]

how low is low? my olds 350 runs at about 13-15 psi when totally warm with some miles under it; it runs at 40-60+ (dont remember off the top of my head exactly but its roughly around there) with the choke on right after starting. I can't tell you the spec of what it should be for sure but my engine runs normal somebody could tell me if thats a little low for an Olds

 

[Peter]

how low is low? my olds 350 runs at about 13-15 psi when totally warm with some miles under it; it runs at 40-60+ (dont remember off the top of my head exactly but its roughly around there) with the choke on right after starting. I can't tell you the spec of what it should be for sure but my engine runs normal somebody could tell me if thats a little low for an Olds

this was also with 5w-30 and ill prob move to mobil 1 delvac with my new cam going in

 

[Mathematic]

Slim chance of this but you may want to verify the oil pressure gauge is good, no kinks in the line or anything like that.

No kinks. a couple bends here and there but nothing to stop the flow. As i stated earlier...i had the same problem when i got the car back, before i installed the gauges. I just couldnt pin point the reason for the idling down and quitting. I thought it was the carb but the whole time it was the oil pressure. The gauges just helped me figure out the problem.

 

[CHRIS.O]

Well I dunno if the idling low would be caused from the oil pressure exactly but if the engine has none at idle something is going on inside. For I dle I would look into carb adjustment, vacuum leaks, timing.

 

[Bar50]

10 psi per 1000 RPM is acceptable.

Olds have a large-er rear main bearing clearance to 'flood' the old style rope rear main seals, it will only get larger as things wear. If the oil pressure dropped enough for the car to 'die' it will lock up. It will stay locked up.

Try some different oil, try some racing formula straight 30 wt first, no synthetics, that is for over head cams and different tolerances than any Olds V8 motor has.

As for the 403, I wouldn't take $100 for mine, they are too hard to find. Its worth it, but, that's relative.
I would not go for the 307.