Thought the high pressure was due to being a rebuild but after about 400 miles its still high. cold idle is 60psi, warm idle is 40psi, cruising its at 60psi and at WOT it only goes up to about 64psi. Changed the pressure sensor and it's still the same. will it go down after some more miles? The pump is just a stock replacement.


Posted from Camaroz28.com App for Android

 

Looks good to me. Try putting an aftermarket gauge on there to see for sure however, I would not worry at all standard volume and high pressure is good. It may have the white GM spring inside which is for high pressure

Sent from my LG-P999 using Tapatalk 2

 

Why do you think that is bad? If your bearing clearances were on the tight side, your hot idle pressure might trend to be a little higher than most. Also, you don't indicate the oil you are using.

 

I don't know what's bad and what isn't. I'm no expert. I just worry.... So I turn to this site for assurance. It's 5w30. Just changed it today after 400 miles on build.

Just didn't know if high pressure was a sign of something not right inside.


Posted from Camaroz28.com App for Android

 

60 is not high. I don't see a reason to worry. People usually complain about real low hot idle pressure. Yours is real good.

 

Ok lol thank you! I appreciate you and everyone else on this forum that knows a lot about these cars.honestly without this website and shbox.com,I would be lost.


Posted from Camaroz28.com App for Android

 

What oil filter are you using?

 

Fred brings up a good point. Alot of reported failures with the fram filter and I am sure they may make some of the other generics. I also would imagine some may perform better with your higher idle pressures. Might be well worth checking with a mechanical guage to confirm your readings. Certain oils have different flow characteristics given their weight especially synthetics. Might notice small differences there.


Posted from Camaroz28.com App for Android

 

I use the cheap Fram filters. Never had a problem but I will use a different brand if you guys suggest so.


Posted from Camaroz28.com App for Android

 

Personally I would run wix or the napa brand that wix makes for a filter that most parts stores will stock. Another member uses (I believe moroso) and I read up on their filter and was interesting. I was looking into all this with my low oil pressure. I have had mechanics say for years not to run fram. I have read of several others saying the same and have heard of some of the failures. Definately worth the few extra dollars in my opinion.


Posted from Camaroz28.com App for Android

 

If you have read anything on car boards, you should not be using a Fram filter.

 

Ok, I'll buy a better one as soon as I change oil the final time for break in. thank you guys!


Posted from Camaroz28.com App for Android

 

If I recall correctly, I run an ACDelco 454 filter. I'm not sure where they stand compared to other filters now, but I've had no issues with them.

 

Problem is, the test results change from year to year. The Fram filters got their reputation based on a physical examination of the filters, done at least 15 years ago. A recent study had bad results for the AC Delco filters. Hard to keep up with the tech.

Here's an interesting site, that appears to use valid scientific methods. I am not endorsing this site, just bringing it to your attention. I found it interesting.

Oil Filter Comparison Study - GM Truck Central

Untitled Document

Note that the "weighting" of factors used to develop the numerical "grade" may not match your priorities.