Proper DoD delete oil pump

[03GMCYukonXL]

So I did the DoD delete and fixed all my post DoD delete issues except for I'm geting really low oil pressure. I did replace the sensor AND the screen with a brand new one. But I'm getting like 10 PSI or less at idle and about 35 PSI while driving. Maybe 40 PSI when I get on it.

I'm not sure if it's really that low as I don't really hear any lifter noises at idle, however I've read more than a few times that I need to get the melling 10296 pump. Which sucks because I just put the thing back together and have been driving it lol. I really don't like dropping the front diff just go get the stinking oil pan off just to get the pump out. Anyways, does this forum agree with the recommended pump change?

 

[03GMCYukonXL]

And I'm reading that I actually need the melling 10295.

Oil pump Melling 10295 vs 10296, 295, 296 - LS1TECH - Camaro and Firebird Forum Discussion

Generation IV Internal Engine - Oil pump Melling 10295 vs 10296, 295, 296 - Had to rebuild my L76 in my Pontiac G8 GT due to lifter failure. Just a basic job. Re hone and put new bearings and rings in it plus DOD delete and a pretty aggressive cam. Im trying to save cost where I can so Im...

ls1tech.com

 

[iamdub]

So I did the DoD delete and fixed all my post DoD delete issues except for I'm geting really low oil pressure. I did replace the sensor AND the screen with a brand new one. But I'm getting like 10 PSI or less at idle and about 35 PSI while driving. Maybe 40 PSI when I get on it.

I'm not sure if it's really that low as I don't really hear any lifter noises at idle, however I've read more than a few times that I need to get the melling 10296 pump. Which sucks because I just put the thing back together and have been driving it lol. I really don't like dropping the front diff just go get the stinking oil pan off just to get the pump out. Anyways, does this forum agree with the recommended pump change?

What pump did you put in it? The stock pump for the AFM engines is a high volume pump. I used a Melling M295HV for mine. Since I capped off everything AFM-related, essentially making it like a Gen3 engine, a standard volume/standard pressure pump would've been fine. But I wanted more volume since it had 200K and I was gonna run it hard. Still, I don't see a standard volume pump causing that much of a loss in oil pressure. You might wanna try a non-AFM valley cover, GM #12598832.

 

[03GMCYukonXL]

What pump did you put in it? The stock pump for the AFM engines is a high volume pump. I used a Melling M295HV for mine. Since I capped off everything AFM-related, essentially making it like a Gen3 engine, a standard volume/standard pressure pump would've been fine. But I wanted more volume since it had 200K and I was gonna run it hard. Still, I don't see a standard volume pump causing that much of a loss in oil pressure. You might wanna try a non-AFM valley cover, GM #12598832.

I reused the factory oil pump. I have the non afm valley cover. It came with my AMS racing kit.

 

[randeez]

what was your oil pressure before?
did you plug the towers in the valley or just relying on the cover to seal?

 

[iamdub]

I reused the factory oil pump. I have the non afm valley cover. It came with my AMS racing kit.

I assumed you reused the VLOM cuz you said you replaced the screen when you replaced the sensor. I never knew you could use the screen in the non-AFM valley cover. It wouldn't go in on mine and I used a stock valley cover just like what looks to be in that AMS kit. My thoughts are that either the sensor isn't accurately reading the pressure or the gauge isn't responding accurately or you have an internal leak. Did you replace the pickup tube O-ring?

 

[j91z28d1]

the ls oiling system pod caat I was listening to said the vvt using more oil volume than the afm lifters. but byond that.. did you happen to peak at the cam bearings while it was apart? ls seem to always have cam bearing wear, but it's never really an issue.

 

[03GMCYukonXL]

I assumed you reused the VLOM cuz you said you replaced the screen when you replaced the sensor. I never knew you could use the screen in the non-AFM valley cover. It wouldn't go in on mine and I used a stock valley cover just like what looks to be in that AMS kit. My thoughts are that either the sensor isn't accurately reading the pressure or the gauge isn't responding accurately or you have an internal leak. Did you replace the pickup tube

I put the oil pressure sensor with the screen in the back of the non DoD valley cover. It's a new sensor and a new screen. I was told I'd hear lifter tick if it was actually low but I do not hear that. Also, I know I am burning 0 oil because there is no smoke, and yes, I replaced the 0 ring with the orange one. I'll also add, that it's only when it's at operating Temps. It's fine until it warms up.

 

[03GMCYukonXL]

This is at idle in neutral


This is at idle in drive



This is while driving

 

[iamdub]

Like Randeez asked- what was your oil pressure like before?

I don't believe that pressure, if it is accurate, is low enough to cause collapsed lifters. It's plenty when driving. I'd confirm the pressure with a mechanical gauge before diving deeper.