From what you have explained, its obvious what is going on here. G-Forces from taking off are causing you to lose oil pressure. Try this as a temporary fix. Overfill your oil anywhere from a half to full qt and see if your problem goes away. If it does then most likely you have either a pickup that is broken or fell off somehow. If the pressure doesn't drop when you rev at a stand-still then you can rule out things such as oil filter/pump/and thickness. Good Luck with your problem.

 

Are you sure? I don't think so man... See it does this FROM A ROLL even, but like NOT right away.. Let's say Im at 3k in fourth and then I floor it.. Pressure is fine, starts building up, then BOOM it like starts going down at like 4k-4500

Like I said though at a stand still everything is fine. I can rev it up and hold it at 5k and no drop what so ever

 

OK, I don't remember reading that above. I thought that you were having this trouble from the time that you romp on it in gear on up.

So.... you're saying that if you floor it from a stop, you gradually build up oil pressure till around 4-4500rpm? But, when sitting still out of gear, you can rev it all the way up without a problem. If this is what you are saying than in all honesty it sounds like bearings gone south. Which is hard to believe since the engine was just rebuilt. I wish I could be more help.....

 

No, couldn't possibly be a bearing It was doing this same bull$hit last time before I rebuilt the motor this year.. (Like I said it gets rebuilt almost EVERY YEAR) so I dunno WTF the deal is.. It's pissing me off though

Gonna try some 10W-30 tomorrow...

I wanna know about this M1-302 filter I have.. Anyone else had problems with it? It's the LONGER verison of our filter..

 

Still sounds like cavitation to me!!!!!

Did you chamfer the hole into the bearing cap under the pump.

 

What? are you talking about the hole in the OIL PUMP?

 

I think the pressure spring is in the oil pump or just outside of, I'm not real sure as I'm not an engine builder. But whether or not yours is new, it's the stock pressure spring which is why you're getting 50psi instead of 60 or 70psi. I think you should switch to a higher spring especially when you have heads and cam and rev the motor to 6500+ and make sure oil gets up into the valvetrain fast enough.

The M1 oil filter has great filtering capabilities and is pretty durable, but it's flow is very subpar compared to even a good Wix filter. If a filter doesn't flow very well, it goes into bypass mode when oil volume goes up (when engine rpms go up) and not filter oil in the interest of preserving oil volumne getting to the engine. The K@N's don't have to go into bypass as much so the oil is getting filtered even at 6k+rpms unlike lesser filters. I don't work for anyone, but go to www.bobistheoilguy.com Lots of good info on oil, filters, additives, etc

Jason

 

Just my 2 cents, I really think you need to verify pick up to oil pan clearance. Real easy to screw up, real easy to fix.

 

Have you still got the windage tray in?

 

No it's been removed for quite some time.

I will give this a try after I change my oil to 10W-30 tomorrow. Plus Im going to install the regular AC Delco 1218 Filter and see how it all holds up.

I can't see the pickup being off because I remember test fitting the oil pan WITHOUT the gasket on and it wasnt hitting the oil pump screen, so I would think having the gasket on there would give it more clearance as well...

 

Did the problem start after you took it out?
May be that the crank is pulling enough oil up to uncover the pickup.

 

Hmm that's intresting.. I can't say for sure that all this started AFTER I took the windage tray out cause I can't remember back that far but it's sounds like MAYBE it could be something like that I dunno.. I haven't had any experience in dealing with how windage tray's work etc

 

http://web.camaross.com/forums/showt...t=windage+tray
Look at Eric Bryant's post here. Does that sound like you?
Might try a search on windage trays/oil pressure problems and see what turns up.

 

Well, I changed to 10W-30 today and used the 1218 filter rather than the mobil 1 M1-302 filter and it's still doing the same thing

I tried to look and see if I could tell how close the pickup was to the pan and it's hard to tell but it looks like it's good distance but im not sure... My next step is just to just replace the oil pump and pickup and see if that helps... That's about all that is left for it to be.

Anyone know how to check to see how close the pickup is to the pan? How far should it be from the bottom of the pickup to the top of the pan?

 

Yes, sounds EXACTLY like my prob... But what's with everyone else saying that they have no probs with the stock pan and pump