My car has around 117k miles on it and at around 5 thousand rpm's on up the oil pressure spikes to around 20psi. I'm running 5w 30, any one running 20w 50?

 

so it only read 20psi from 5000rpm up? whats the oil pressure at idle, and cruising, and before it reaches 5000rpm when flooring it?

 

It is not safe because it is just a bandaid to cover up the real problem. My guess is that the procharger has killed your crank bearings and it's time for a rebuild.

 

oh wow I didn't even see the pro charger I was gonna say maybe there was a chance of the sending unit to be bad but yeah chances are you bearings are messed up, but the thicker oil may buy you some time so start saving for a rebuild.

 

When its cold at idle the pressure is around 15psi, once it gets hot, it drops below the first line but not in the red. It looks like its around 10 -12. it just gradually climbs up to 20psi and does'nt go past that. I had never realy looked at the oil pressure once the procharger was on and when i looked down and seen 20psi at 6 thousand rpm's my heart sunk! I thought it was going to come apart then but its still staying together. I know the boost has caused and will continue to cause stess and wear on the bearings but I wonder if the increased air temp from the blower is also playing a role, not just the bearing clearances. I bought the twin high flow system, and it just realy does not cool the air down much.

 

Air temp will not affect your oil pressure that much.

First off, did you check your oil level to make sure it is full?
Second, do you still have the stock oil cooler on there? If you do, remove and bypass it immediately.

 

Ok I was just hoping the air temp might be a factor, and yes the oil is good its never burned a drop of oil. Bypass the oil cooler by unhooking it?

 

You have to remove the oil cooler. It's between the filter and the block and it has two coolant lines running to it. Those are what you need to bypass.

 

Ok. by removing that is it gonna lower my oil temps? what will I gain?

 

i would run straight 50W will help for engines with lower oil pressures and great for Turbos cars as well.

 

As it's been said already, running a thicker oil is just covering up your big problem. Chances are the boost has been slowly destroying your bearings. The LT1 was built by GM with very tight bearing clearances, which can cause premature failure when too much stress is put on the engine, i.e. a supercharger. Running the thicker oil can't hurt it more than it already is, but get ready to rebuild the engine. This time boost friendly .

 

The oil cooler is well known for getting clogged with junk. Search around you will find several posts about it.

 

This is a poor attempt at humor, right? No one would seriously make a recommendation like that.

 

20/50 was the recommended oil for my golen 383 lt1...

But as stated... it's a band aid for your problem...

 

ripp off the oil cooler I guarantee youll have way more oil P.