Oil pressure question
Thread Starter
Drifting
Joined: Dec 2004
Posts: 1,714
Likes: 42
From: Austin Texas
Oil pressure question
I see in the owners manual that the normal pressure range should be between 30 to 40 psi.
Mine has always been higher than that, like between 40 and 60 psi. (I am not the original owner) Interestingly, I just changed to an AC Delco filter and it seems to read at a more consistent reading but still around 50 psi after it reaches operating temperature.
The engine runs great and I have changed the sender as well. Is this too high? If so I guess it could be an erroneous reading. What are most of you experiencing for oil pressure on stock or modified engines? What could cause this?
Thanks
john
Mine has always been higher than that, like between 40 and 60 psi. (I am not the original owner) Interestingly, I just changed to an AC Delco filter and it seems to read at a more consistent reading but still around 50 psi after it reaches operating temperature.
The engine runs great and I have changed the sender as well. Is this too high? If so I guess it could be an erroneous reading. What are most of you experiencing for oil pressure on stock or modified engines? What could cause this?
Thanks
john
Melting Slicks
Joined: Oct 2006
Posts: 2,417
Likes: 336
From: Texas
30-40 psi for a stock pump is normal, if the P.O. changed the oil pump, could of installed a high volume one, i have a mellings 55high vol,, in my '79 355 (modified) engine, it runs right around 50-55 psi. i run a wix filter.
Melting Slicks
Joined: Jul 2010
Posts: 2,762
Likes: 820
From: SUFFIELD CT USA 2023 C8 CORVETTE UN-MODIFIED FINALIST
2023 C8 of the Year Finalist - Unmodified
It would help to know what the specs are on the car, sb, bb, year etc, These gages were never really calibrated so that is also a possibility
Last edited by BPHORSEGUY; Jan 29, 2011 at 11:01 PM.
Thread Starter
Drifting
Joined: Dec 2004
Posts: 1,714
Likes: 42
From: Austin Texas
Sorry, the motor is a 350 from a mid 70s truck as best I can tell. I do not know the history of the motor. However, I just did a head change and noticed that it had .060 over pistons. So it has been rebuilt.
Is 50 psi what you can expect from a high volume or high pressure pump? If it was machined, there is a good chance it has a new or upgraded pump as well.
Is 50 psi what you can expect from a high volume or high pressure pump? If it was machined, there is a good chance it has a new or upgraded pump as well.
