low oil pressure after DOD/AFM delete

[no1udknow]

Hey guys, I have an 07 avalanche with a 5.3. I recently put in a AMS racing DOD delete kit in. Stock lm7 cam, lifters, valley plate etc. Now I have low oil pressure. Just under 40psi starting cold, but after running a bit drops to about 22psi. I don't want to damage the engine, looking for suggestions. it is a 2wd so I was thinking of dropping the pan to check the pickup o-ring, but I was reading about some bypass also. I'm an experienced mechanic (motorcycles and heavy equipment) but I just havent dug into LS engines yet.

[LS short box]

Not an expert LS guy but if you used the stock valley plate could you be losing oil around the 'oil towers" in the block.
I haven't done a DOD block but I believe you either have to plug the block DOD towers or use a non DOD Gen 4 valley cover that had the o-rings in the valley cover.

[garyd1961]

22 psi at idle is a plenty, not going to hurt anything

[LS short box]

The LS6 in my 98 Wrangler runs about 25 psi at idle when warm. I run 10-30 Mobil 1. Been 15 years like that with no issues.

[biketopia]

You're probably ok at idle, does it rise when you rev it? Like stated some people block the DOD towers when they do the delete, others just use a gen 4 valley cover and call it good. I did on the one I did and had no problems. Since you're 2x4 it's easy enough to slap a fresh o ring in the pump and check for blockage in your pick up. When you did the cam did you replace the cam retainer or re-use it. I've seen people have oil leak past the plate when re-used but usually it's a good leak and you have no oil pressure. Also, are you using a stock gauge or analog? If it hasn't been done it's a good idea to replace the OPS and the screen under it with new GM parts.

[no1udknow]

Sorry I didn't reply for so long..... so I pulled the pan and replaced the o-ring on the pick up and made sure the pickup was clean. It improved pressures a bit but nothing drastic. It runs fine but no oil light coming on now. Fixed a few ulother things. Also, the kit I bought came with a non dod valley plate, but I have heard the pressure can leak past the Orings and it's better to do the rivets, but for now it runs good with safe oil pressure.
If anything I may buy a new car, and this truck may become a donor for my 70 so I'm not overly concerned 😈

[mongocanfly]

no1..have you changed the oil pressure sender? theres a screen under it that can get clogged up..mine was, swapped it out and ive got good readings now