ls72nova

The reason I asked is I just noticed a I’m down to 20psi at idle and was wondering if the oil from my turbos could be part of the issue. I normally had about 35psi at idle when warm. It’s a fairly new build(stock bottom end) and it’s due for its oil change. I have Mobil1 10-30 in it I believe.

Suncc49

Sounds just like my situation. Did you re use stock truck dipstick because it won't be accurate?

Fresh oil, filter... 6.2 quarts and etch the dipstick where full.... see how much you have when you drain it.

frojoe

iTrader: (10)

For those etching the dipstick to be right (or just trying to figure out the correct oil amount) is there a certain height below the bottom of the block that's considered acceptable? Oil level just below the windage tray? Can someone show a pic of where a dipstick reads "full" on its corresponding oil pan?

Game ova

20psi is fine at idle. You figure with the turbo being hundreds of degrees, it's going to thin your oil quite a bit. It's actually better to have hot thin (within reason) oil, than to have thick cool oil. Showing high oil pressure on the gauge is way overrated, these motors don't require as much oil pressure as one may think.

Suncc49

Mine wasn't super scientific... engine still in car so I just filled to holley pan and filter to spec, cleaned truck dipstick a few times, and marked it where the oil level was full @ 6.2 quarts for the holley pan. Should be close enough.

ls72nova

I got the the dipstick and tube it said it needed in the instructions. I think it said and LS3 Camaro dip stick. I ordered the GM part number it called for.

I wonder if I should go up to 10-40 in the spring to be safe in case the oil is getting to thin just to be safe. The car is shut down for the winter, I broke the drive shaft in two paces last time out in the car at the track

Game ova

Going to have your transmission gone through?

ls72nova

Not sure yet, probably though. I’m laid up right now from having ankle surgery. The front half of the drive shaft is stuck in the trans. I tried yanking it out before we pushed it on the trailer but it wouldn’t come out(I didn’t try real hard I was pretty frustrated). I want to get my converter re-stalled. Here’s a pic of the drive shaft. And a video of when it broke

Game ova

Wrong vid? I watched, and you ran all the way through the trap. The reason I asked, is because when you break anything after the output shaft..... the transmission will usually be hurt. It might still work..... but it will come apart sooner than later. I'd be willing to bet that your low roller clutch looks like the one on the right. This is the one out of mine when I broke a yoke a few months ago. On the left...is what it's supposed to look like.

ls72nova

You’re right, mybad!!! Hers the video of when it broke, it was pretty violent sounding in the car, I’ve never broke one at speed before.

Here’s the correct video

AutomagicLS1

iTrader: (18)

this is great. I run 8 in my motor. I know when I finally got holley efi on my car I about **** a brick when I could see the pressure drop on hard launches. Ppl don't realize they can't see it on the stock cluster. I'll finally get a real pan this winter

01ssreda4

iTrader: (96)

I did that pic bc I wanted to see where my turbo drain was gonna end up in relationship to how much oil i was running. I dont know for sure, but i assume a quart at idle and maybe more at rpm with be gone from the pan? Factoring that in, these pics sitting are worst case scenario.

Here is levels, vs inches. Remember i had to mark above the water level so i didnt get the sharpie wet.



Here is the windage tray measurement from the block, factor in another 1/8 for gasket thickness and you can figure out where your at.

Forcefed86

iTrader: (4)

Great pic, should also note the level drops a good inch or 2 when the engine is running. Also the filter volume has to be taken into consideration. I've run 8qts just fine in an Fbody pan and my drain is about at your 7qt mark

01ssreda4

iTrader: (96)

Bzzzzzz, try again.

Mine seems to be working well running 7 quarts with the -10AN draining as pictured.

rotary1307cc

iTrader: (5)

What cares about windage. Pressure >>>>>>windage

Loose 10hp from windage big damn deal, you are literally killing **** if you start dropping pressure. Fact

Fill that **** up. I run a strong 8.5 on a stock fbody pan

The static level drops a ton when the engine is running. You easily have 1-2qts throughout the engine not in the pan

rotary1307cc

iTrader: (5)

People scared about windage and overfill more than pressure drop I have never understood

tblentrprz

Hopefully folks aren't scared about windage but wise about frothing the oil by rotating assembly. Frothed oil with air can overheat very quickly.

Not sure why many don't set oil level based on running conditions. Idle level is only going to go further down at 7K.

01ssreda4

iTrader: (96)

^^^yep, aerated oil IS a big deal fella.

rotary1307cc

iTrader: (5)

8qts is no where near the crank in operation

01ssreda4

iTrader: (96)

Perhaps not, but what about g forces in all directions. We know you dont leave your car in park at all times.