LOL, double issue if you're a grower and not a shower

 

BoOm! Lol!

 

90% of my searches yield the unanswered thread just left hanging with no answer. Tryna turn this franchise around.

 

Between that happening and all the dyno videos on youtube with no numbers posted or shown I have a hard time not hulk smashing my computer

 

Bad news,

during street tuning, the first WOT pull i made i noticed as i cam to a stop idle oil pressure is now 20psi ..... again im going to have to verify this with a mechanical gauge other that that also should probably install a new sending unit. ill keep it updated any input is appreciated

 

You hurt a bearing . Mine did the same thing

 

Cam bearing ? What did you end up doing ?

 

Man that blows. Best of luck in that it's something easy/simple

 

got a mechanical gauge on the way. Couple of guys at work who also know these motors well thinks it's the cam retainer plate since i did replace it and they can sometimes blow out if under torqued

I've also been driving it around with the **** it mentality and it honestly runs very well very quiet no ticks not putting the bearing failure past me yet.

 

After all of that... This all sounds like a classic case of worn bearings.

Not worn out yet... But on there way to be.

Time to disassemble and get a look at the main journal bearings to start.

If you ate lucky, you may be able to just remove the engine oil pan and replace the main journal bearings one main cap at a time while under the vehicle.

I hope I am wrong... I wish you good luck!

 

Yeah at this point you need to confirm the actual pressure and LOL at the mentality comment. Is there any other way to drive an LS engine?

 

yup, after work I'm going to buy a 5.3 from the local yard for 200 bucks 170k just to have as a spare since the 6.0s are $1k or more around here. I can build a 5.3 with 4.8 flat tops and minor port work to the 862 heads with the cam I already have if it's not jacked and prob make the same power as a cammed 6.0

 

Put a mechanical gauge on it..... the gauge on the dash is 8-10 psi off so I have 30psi at idle when the gauge shows 21 ish I also logged oil pressure doing some driving around it is steady 30 at idle. 65 at 6k rpm

when it warms up I'm going to check the Oring I'm willing to bet I pinched it.

 

 

Sounds relatively fine... With in spec. anyway.

Where on the engine are you measuring the oil pressure?

These engine can see a significant difference in oil pressure, depending on which oil pressure port was selected to connect to the mechanical gauge...

The factory oiling system will route oil through the camshaft journals down to the main bearing journals.

Therefore if oil pressure is measured only at the valley cover for example, lower oil pressure from the main journal bearings back towards the camshaft and lifter galleys may not be detected (due to worn main bearings) in comparison to oil pressure between the pump and the driver side lifter galley...

Take a measurement at the driver side cylinder block location right at the turn out of the oil pump into the side of the cylinder block. Compare both locations oil pressures.

Should there be significantly less oil pressure at the valley cover location, than there is excessive ware in the main bearings and/ or possibly rod bearings.

 

measured above the oil filter the valley cover is my next move. Waiting for weather to warm up. I agree with your statement if pressure is relatively the same at all ports I'm leaning towards an assembly error. I see alot of people having issues with the cam retainer plates from manley. Also I was a little aggressive putting the pickup tube back in as well. I've been driving it around non stop these past few weeks like this since it goes through the snow so well. I would expect there to be some damage done by now noise wise or material on the drain plug which I checked real quick and it was clean.

should be noted 30psi was the hot idle it's 45 cold as it comes up to temp I was seeing 30psi even after hard runs. This is with Mobil 1 5w30 full syn

 

30 hot...

Fuhget about it, that's plenty