INVISIBLEZ

iTrader: (45)

I have a 383 stroker in my vette, the oil pressure is low. I spoke with the previous owner who had the engine built, and he said it's always been lower than normal since the engine was installed. I have heard that with Federal Mogul bearings, oil pressure runs somewhat lower. The car does not smoke. Or the next thing that I could think of is when they installed the engine they either 1, did not put the o-ring on the oil pickup tube, or 2, pinched the o-ring. I am posting this over the reasons this could be happening. I appreciate any suggestions.

ArcticZ28

iTrader: (14)

Could be an o-ring issue, bearing clearances, or even the oil used. I'd put in some GC 10w-40 and see what the pressure looks like after that. Then go from there.

INVISIBLEZ

iTrader: (45)

Thanks, this is what I need, some imput.. I'm tired of racking my brain.

MSGHUFF

iTrader: (7)

What is the guage reading? You might also try a different brand oil filter. I see 4-5 PSI difference between fram and ac delco (fram being the lower)

TheBlurLS1

iTrader: (8)

K&N 2006 (truck filter) is what I run on my f-body, not sure if it will work on the 'vette though. I noticed a boost in the pressure when I switched from the Fram.

You can also yank the oil pump for a new ported one and shim the hell out of it.

https://ls1tech.com/forums/generation-iii-internal-engine/433403-oil-pump-mods.html

INVISIBLEZ

iTrader: (45)

Thanks a bunch Blur, I will be doing this as soon as I get home in 4 1/2 weeks. I don't think a truck oil filter will fit on the vette. I am use to the rule on my pervious cars of 10 p.s.i. for every 1000 rpm. I'll get this one there...

01Z0H6

iTrader: (63)

I just had my motor rebuilt with all Fed Mog bearings,seals etc... My oil pressure is around 60-70psi.... That is better than it has ever been..

ArcticZ28

iTrader: (14)

Well, it doesn't necessarily depend on the parts in the engine as it does what your builder puts the clearances at. That will dictate a lot of where your native oil pressure should be, but you can raise/lower it using diff oil/filters/pumps/etc.