Ls1 oil pressure drops when pressing the throttle

[VtBandit]

Hi, I have a 98 ws6, no mods done that i have noticed recently has the oil pressure drop when i accelerate after being warmed up. It does it while driving or sitting at idle. It used to increase when i throttled it, just started doing this about a month ago. Checked oil, it is full. Only other thing i noticed preceding this happening was a few months ago it started ticking slightly at startup. Like a sticky lifter in my old 305...Just slight and it goes away when warm. Other than that i noticed nothing different. Any thoughts on why this is occuring? Should i be concerned something is gonna go bad? Anything i can do to stave it off if it is a sign of bad to come?

Thanks
F Small
Oh yeah, has good oil pressure otherwise, just drops slightly when throttling it slow or fast doesn't matter...

[SOMbitch]

Typical sign of large bearing clearances. Initial drop because tolerances open up on acceleration then rises as oil pump speed increases with rpm....

[onebadws666]

i have seen pressure drop due to a split in the o-ring that goes between the oil pump and pick up tube

[Demon_Z28]

i notice I usually have to add half a court of oil when I see this happen. I will sometimes notice that my oil pressure will drop on acceleration because of lower oil levels. My Z28 did this as well as my SS does.

[MrMasterCraft]

My white one does this. When it's warm, at 2k RPMs cruisinig around 65mph on the highway, it'll sit at 40lbs maybe less. I can get off onto a main county road, and when on my initial deceleration, the pressure jumps up about 5-8lbs for a few seconds then goes back down. Oil is at the tip top of operating range as well Motor won't be ready till spring, don't wanna replace as of yet