what is the recomended oil pressure?

[87454westernhauler]

I havee an 80 c10 silverado with a 350 sbc. it holds about 25lbs. of oil pressure most of the time. what is the oil pressure level supposed to be at?

[Grim 82]

At least 1psi per 100 rpm.

[Captkaos]

minimum of 7lbs at idle and 1lb per 1000rpm.

[1979C20]

minimum of 7lbs at idle and 1lb per 1000rpm.

At least 1psi per 100 rpm.

Is it 100 or 1000?

[Captkaos]

1000, keep in mind what I posted is MINIMUM.  10-15lbs at idle is normal.

[jaredts]

It does change though, right?  I wouldn't say the same number at idle and highway speed is normal.

[Grim 82]

Pressure should rise with rpm increase. At a minimum of 1 psi per 100 rpm:
700 rpm idle = 7 psi oil pressure
2500 rpm cruising = 25 psi minimum

[1979C20]

1000, keep in mind what I posted is MINIMUM.  10-15lbs at idle is normal.

This isnt making sense to me. Your saying 1lb per one thousand rpm. So a 800rmp idle would be .8lb? Grim makes sense, 1lb per one hundred rpm. 800rpm idle would be 8lbs.

[87454westernhauler]

grim that is pretty close to what it is, unless it is hot and idling very slowly and it does fluxuate with change in RPMs.

[figure843]

x2 for grim!   

[Captkaos]

This isnt making sense to me. Your saying 1lb per one thousand rpm. So a 800rmp idle would be .8lb? Grim makes sense, 1lb per one hundred rpm. 800rpm idle would be 8lbs.

7lbs MINIMUM at idle (600-800lbs) and MINIMUM of 1lb per 1000rpms.  So at 5000, you should have at LEAST 7 + 5x1= 12lbs
What Grim posted is normal/recommended.

[1979C20]

I understand now. I needed to see the whole equation. Thanks. 40-60 at idle wont hurt anything, right?

[beastie_3]

No. My truck pumps 60 or so when cold at idle, then below 25 when hot.

[Skunksmash]

Yeah for some reason chevy's tend to change, at least that's what the gauge needle shows. Fords stay constant for some reason.

[87454westernhauler]

Just an update. Been working over 10- 12 hours daily for the last 3 1/2 months and have put about 6000 miles on it in that time and it gets a solid 25-30lbs of pressure going down the road and 45lbs when it is cold. This thing is a solid old truck and I just got done puting headers and chery bombs on strate pipes. other than the exaust and changing the oil in it I havent had to many major issues with it other than gasa millage