So a little while ago i bought a worked up aluminum block 6.0 and everything has been great, until today. All of a sudden this morning my oil pressure is only 20lbs and it knocks. The oil level is up and the oil quality is good. Just low pressure and a knock. This motor only has 8000 miles on it, 8000 miles and its taking a **** on me. Im just so depressed. Does anyone know what the problem might be. Main bearings? i assumed if it was just an oil pump that it wouldnt knock. Everything, including oil pump and bearings were brand new when i bought it. I just needed to complain to someone, this is my only vehicle. So i guess the Bus is next.

 

I'm sorry to hear about this. I'm no mechanic but it doesn't sound good. I've seen your videos and I know you aren't easy on that LS2 though.

 

pull the pan off and check the bearings.

 

Yea, im not easy on it, but im actually not as hard on it as i was with the 5.3 but thanks for the support

 

**** man, sounds like you smoked a bearing

 

When a pump fails usually all pressure is lost but never know. Drop in pressure does point to a bearing along with the knocking.

Sucks buddy. Unfortunately I read a lot about LSx style engines failing after a rebuild.... more so than other engine platforms. Makes me worry about doing my own build when the time comes.

 

sounds like a pinched o ring on the oil pick up tube. might be wrong but it's a 2 buck chance

 

Sure does!

 

Im with these guys...

 

It only takes about 5PSI of oil to float a bearing at idle. If you have at least that much oil pressure at idle and it's still knocking I would be looking for something mechanical causing it, not an oil pump