l99 low oil pressure

[SSkat]

My 10296 melling keeps me at 30 psi hot. I am cammed.

[Risingson05]

Originally Posted by SSkat

My 10296 melling keeps me at 30 psi hot. I am cammed.

I did keep vvt idk then maybe my bearing clearances wasn’t as tight as yours ? This was for my l92 that in my truck tho . I was just stating my personal experience with it . I haven’t lost any oil pressure at all , other than from the lifters

[morepowerjoe]

Originally Posted by SSkat

My 10296 melling keeps me at 30 psi hot. I am cammed.

Damn that is quite a bit more than mine. I don't really want to but I'm thinking I should go ahead replace the pump.

[Risingson05]

Originally Posted by morepowerjoe

Damn that is quite a bit more than mine. I don't really want to but I'm thinking I should go ahead replace the pump.

Good time to do a cam lol

[morepowerjoe]

Originally Posted by Risingson05

Good time to do a cam lol

Yeh I wanted to do a afm delete with a cam, so I think I'll do the pump at the same time.

[Risingson05]

Originally Posted by morepowerjoe

Yeh I wanted to do a afm delete with a cam, so I think I'll do the pump at the same time.

Hell yeah !!

[morepowerjoe]

Yeh I never paid attention to my oil pressure until after I replaced the lower gaskets and oil pump which makes me think that it was never that low before or I would have noticed it. But I did see some older post where some of the members had said they were at 15-20 psi at idle but I'm just afraid of starving the valve train.

[Risingson05]

Originally Posted by morepowerjoe

Yeh I never paid attention to my oil pressure until after I replaced the lower gaskets and oil pump which makes me think that it was never that low before or I would have noticed it. But I did see some older post where some of the members had said they were at 15-20 psi at idle but I'm just afraid of starving the valve train.

I haven’t starved my valve train , only hiccup I had was broken rocker arm from failed trunnion and it was getting oil as all my rockers were soaked in it .
I’d give melling a call they’re really helpful and can give you some insight aswell.

[morepowerjoe]

That's a good idea. I think I will give them a call.

[morepowerjoe]

So I just got off the phone with melling and the tech I spoke to said that he doesn't see anywhere is says that the l99 uses a high pressure pump. He also told me that the rule is in fact 10 psi for every 1k of rpm and I have 25 psi at 1k rpm so he said I'm fine. But that is according to the gauge on the console so I will get a reading of the obd port just for grins. But I'm still going to do the camshaft.

[Risingson05]

Originally Posted by morepowerjoe

So I just got off the phone with melling and the tech I spoke to said that he doesn't see anywhere is says that the l99 uses a high pressure pump. He also told me that the rule is in fact 10 psi for every 1k of rpm and I have 25 psi at 1k rpm so he said I'm fine. But that is according to the gauge on the console so I will get a reading of the obd port just for grins. But I'm still going to do the camshaft.

Yes , why I went with the 10355 as it’s high volume and that was by melling recommendations when I asked them to spec out a oil pump for me . They also told me the 10355 was made for our motors so there’s no risk in sucking oil
On dry

[Aqua Blue RS/SS]

Originally Posted by morepowerjoe

So I just got off the phone with melling and the tech I spoke to said that he doesn't see anywhere is says that the l99 uses a high pressure pump. He also told me that the rule is in fact 10 psi for every 1k of rpm and I have 25 psi at 1k rpm so he said I'm fine. But that is according to the gauge on the console so I will get a reading of the obd port just for grins. But I'm still going to do the camshaft.

I’m pretty sure the L99 pump is higher volume than the LS3 pump, not psi.

[gunchamp]

Originally Posted by Aqua Blue RS/SS

I’m pretty sure the L99 pump is higher volume than the LS3 pump, not psi.

L99 pump is higher than the LS3. Generally speaking, the L99 pump does not suffer from the LS3 issues. It has to have more due to the AFM system. I deleted my AFM when I built the top end and the factory pump has a pile of pressure with all that removed. I'm seeing roughly 30psi at idle as well when warm.

[morepowerjoe]

When I look up an oil pump for my engine on rock auto. com it says the 10296 Vin W says 18% higher volume and 10 psi higher pressure and the 10355 Vin J is 10% higher pressure than stock for whatever that's worth.