Bad oil pressure in my 94 lt1 Need Help please!?!?

[JoeliusZ28]

17 pounds at idle is perfectly fine.

[white97z28]

17 pounds at idle is perfectly fine.

but the thing is it used to stay up high all the time when i first got it till about two weeks ago and i did an oil change last week and the past few days i have been smelling burning oil and it feels like it wants to stall at idle sometimes.

[jderry]

but the thing is it used to stay up high all the time when i first got it till about two weeks ago and i did an oil change last week and the past few days i have been smelling burning oil and it feels like it wants to stall at idle sometimes.

what oil and filter did you use?

[81DaytonaPaceCar]

17 pounds at idle is perfectly fine.

Actually I think that's a tad low...should be a minimum of 25 at idle and 50 or so at highway speeds...

[white97z28]

what oil and filter did you use?

i used a stp filter and carstrol gtx 5w-20

[jderry]

i used a stp filter and carstrol gtx 5w-20

that may have lowered it a bit, but not that much. Dont they suggest 10w 30 for lt1s?

[white97z28]

that may have lowered it a bit, but not that much. Dont they suggest 10w 30 for lt1s?

yea but i didnt notice it wasnt 30 till i had already put it in

[white97z28]

so since i don't want to hurt my car i guess im just gonna pull the motor and replace the pump

[98blackbeauty]

How many miles on the motor? The oil presure sounds normal for a higher mileage engine. You can change oil pump by pulling motor mount bolts long one on each side and raising engine enough to clear pan. the easiest is to drop the engine. then you can change the pump and sending unit, and cam it. The oil pressure change you describe is really bearing wear, thats why I ask about mileage. I would check the main and rod bearings while apart. The reason the pressure drops when hotter is because of expansion on the bearings and oil flows easier thus lower pressure. Just my opionion

[white97z28]

How many miles on the motor? The oil presure sounds normal for a higher mileage engine. You can change oil pump by pulling motor mount bolts long one on each side and raising engine enough to clear pan. the easiest is to drop the engine. then you can change the pump and sending unit, and cam it. The oil pressure change you describe is really bearing wear, thats why I ask about mileage. I would check the main and rod bearings while apart. The reason the pressure drops when hotter is because of expansion on the bearings and oil flows easier thus lower pressure. Just my opionion

it has 76000 original miles on it and before i bought it with 74000 it was adult driven. but it was stored for 4 yrs before i bought it.

[Kwazrollinz28]

Yes I did but it wasnt fun.

x2 never again will i do that. F-that

[JoeliusZ28]

Actually I think that's a tad low...should be a minimum of 25 at idle and 50 or so at highway speeds...

it is very common for LT1s to idle below the first notch on the gauge (20psi) which people freak out about.

factory service manual spec only calls for 6psi at 1000 RPM.

[white97z28]

it is very common for LT1s to idle below the first notch on the gauge (20psi) which people freak out about.

factory service manual spec only calls for 6psi at 1000 RPM.

Alright so im just gonna leave it be and drive it.

[ba94ta]

my car has 186000 miles on it and i idle alittle below the first notch on the gauge. the stalling thing could be alot of things from fuel pump, fuel filter, air filter, a low idle from your idler screw, your egr could be stuck open......many things

[Kwazrollinz28]

at exactly 1000rpm i idle just above the first bar.

At 2000rpm i go over 40psi