View Full Version : Operating Oil Pressure

12-28-2007, 03:31 PM
What is a good range for oil pressure under operating conditions? I have a 1999 X star with the LT1. I just thought about asking this after seeing another post on here about oil pressure. Seems like I remember it usually being around 40psi......but when I looked at a picture from in the spring, the gage in the background showed around 30psi. When should I get concerned about the pressure being too low or high?
The boat has 732 hours

01-24-2008, 05:08 PM
You should get concerned when the oil pressure drops below 10 lbs/1000 RPM.

01-24-2008, 07:33 PM
I see about 50 psi cold, and about 25-30 after she is run hard for awhile. I have heard no lower than 6psi is bad, but 10-15 is going to raise my brow.

01-25-2008, 10:58 AM
10-15 at idle would still be sufficient for a SBC. But it would also not be characteristic of a SBC so it would raise my eyebrow too. Either way, it sounds like your pressure is fine, to me.