Not to sound like a pessimist or a smartass, but don't waste your time doing anymore tests, put that time to better use by pulling the motor. You have some cracked ring lands which is causing the blowby. How much timing are you running? Stock pistons are very fragile and break easily with forced induction.

The last time I did this it broke 2 pistons at the track (over a 2 hr drive away) and it never fell off-still ran as good as ever that night but it was pushing oil out just like yours. I drove it home and pulled it down and it didn't even hurt the cylinders so I had Diamond make up some custom pistons and I slapped it back together fairly easily. Maybe you will get lucky like that and not have any damage other than pistons.

 

Remove the valve covers after running it a bit and check for large amounts of oil resting on top of the heads. Times I've seen it were in very sludged up engines, once a guy left a shop rag under the valve cover and it clogged them up.

 

New Theory: Blown Drivers Side Head Gasket

Compression test results:
Did these 3 times to get an average. Not that it mattered, they suck.
1-70-65-65
3-90-80-90
5-80-70-80
7-75-80-85

Only did these once, for obvious reasons
2-180
4-190
6-190
8-Didn't bother doing

Who likes my theory?

 

bummer dude, well, whats next?

 

Would a blown head gasket cause oil leakage problems? I blew a head gasket in my 1998 vortec 305 and all i leaked was coolant.

 

That is strange. Would be one heck of a blown head gasket. They usually fail one cylinder not all 4. Almost like the head isn't torqued down properly? Anyway this is all forum chat... You know where to start now.

 

That really sucks after all you have been through. Not to make you feel any better but the 3 pistons I busted when mine detonated were all on the drivers side. As where your problems are.

 

Well way back when I had belt problems, it ran pretty hot a couple of times trying to limp home with no water pump Could have warped the head a little and then upping the boost and beating on it on the dyno may have taken its toll or the 7 hour ride to Orlando when I started having issues. I have a spare set of heads. I guess I will get one checked for trueness and do a spring and head swap and see what happens. I'm not sure why a blown head gasket would cause all the oil everywhere but I will have the head off and get a good look at the piston tops. My neighbor seems to think a blown head gasket would affect the oil and cause blow by etc..I'm also wondering if it is a bad gasket, couldn't that account for the shitty idle while in gear? Maybe it’s sucking air in while in vacuum and stumbling the engine. Anyway, So here are a few questions:

Are the 6L head gaskets different from the 5.3/4.8?

Where do I buy a set of head bolts?
How hard is this to do with the engine in the truck?

 

A blown head gasket can do just that or a warped head. Stock head bolts can be bought from out sponsors tex speed and thunder racing or your local parts store cheapest. You can get 6.0L head gaskets from the dealer for around $30 each wholesale. It isn't that bad of a deal with the engine in. I'd pull the head first before you pulled the engine. I didn't know about your overheating issues. Sounds like a culprit.

 

Well I'll take a blown head gasket over busted pistons any day. The crappy part is I wont be able to get to the swap for 2 weeks and this is my daily driver. I figure a Qt a day is gonna get pricey since I run Mobil 1 Synthetic

MJ or whomever, can you explain to me how the oil is getting all the way back to my intake filter because of a head gasket problem? I'm trying to understand why/how.