ls2pontiac

iTrader: (1)

I noticed once i get over 4,000 RPM and you are foot the floor in 2nd gear, the oil pressure goes down to 25lbs and jumps up to 40 in about 2 seconds. What could be the cause of this? I have a canton pan, and my builder told me to run 7 qts. could the gauge be wrong? It really makes me sick seeing that, especially how i just spent 10k on a new motor..

Wicked94Z

iTrader: (26)

windage man, i have the same problem. try running it with 5-6 quarts and see if it improves...

gregrob

iTrader: (8)

You should also run a high flow filter....

The K&N 3002HP is what I run. It filters excellent and is very high flow.

firehawk238

iTrader: (1)

i have this same problem but since my oil pressure never goes low enough to not lubricate the engine, ive not been extremely concerned with it. i have a canton road race pan with a built in windage tray though. so would it still be doing this?

speed_demon24

iTrader: (6)

I had the same problem with my canton pan. I ended up having to taking out the built in windage tray/screen and putting a moroso windage tray off the main caps to fix it.

FASTFATBOY

iTrader: (23)

My first 355 did that, cam bearings were going south. Telltale sign of that is an oil leak on the water pump shaft.

mklinger

iTrader: (4)

I have seen oil pressure vary due to a failing o-ring where the pick up tube hits the block. Just a thought

FASTFATBOY

iTrader: (23)

firehawk238

iTrader: (1)

well seeing as how my pickup fell off and thats why i changed the pan/pump, i honestly cant recall if i had this problem with the stock pan. i didnt realize the canton pans had this problem. will definately look into this further. glad i read this thread.

shbox

And where would this alleged o-ring be?

shbox

You don't indicate what pump you are using. Aside from windage, it could be cavitation.

FASTFATBOY

iTrader: (23)

#2 Where does the pickup bolt TO THE BLOCK?????????????

RamAir95TA

iTrader: (2)

LOL that's awesome!

ls2pontiac

iTrader: (1)

Melling 10554 with standard spring. I put 6 quarts in this time...hmm. Do you think anything got hurt by it dropping to 30 lbs at almost 6000 rpm real quick a couple of times? It always bounced back within a second or 2.

firehawk238

iTrader: (1)

since it only truly takes 8psi of oil pressure to lubricate the small block chevy, id say you should be ok.

Matts94Z28

iTrader: (6)

My car does the same thing, even after it was rebuilt. It always seems to drop right at the 4000rpm mark and shoot back up. I think it is due to windage to be honest. At first I thought it might have been the bearings, but it continued after I replaced everything. It hasn't hurt me yet.

wrd1972

iTrader: (12)

Mine does this too. I got a Melling 10554 w/ white spring and the gauge bhavior looks like an inverse bell curve.
Someone define windage please.

ls2pontiac

iTrader: (1)

with 6 quarts in it, no problem now. i knew 7 qts was going to be a problem

97Z28SS

iTrader: (5)

Could also be the oil climbing the rear of the pan, I installed a $10 Moroso rear pan baffle just for this reason.

wrd1972

iTrader: (12)

I think my 4K drop is g-force induced.
2K-4K = 50#
4.1K-5.5K = 35#
5.6K -6.5K = 50#


Most stupid question ever cause maybe I am not capable of reading my dipstick.

This is what my dipstick markings looks like.
ADD●xx●xx●xx●◄──OPERATING RANGE●


The level on my dipstick is here, should it be further to the right:
ADD●xx●xx●xx●◄──OPERATING RANGE●
_____________/\


Example A
Is this condidered absolute full:
ADD●xx●xx●xx●◄──OPERATING RANGE●
_______________________________/\


Example B
Is this condidered absolute full:
ADD●xx●xx●xx●◄──OPERATING RANGE●
____________/\

Dont rip me to bad guys.