1972chevelle454

iTrader: (2)

My oil pressure after my cam swap is around 30 psi at idle. Isnt this low for a ls6 oil pump? I have a hot cam and i thought this was pretty low. Let me know, Thanks

eallanboggs

iTrader: (1)

How much oil pressure is "required" for proper lubrication on your motor. Far less than 30 psi at idle so "low" is a relative word. Did you actually want to ask if a DROP in pressure after a cam install is a cause for concern? If that's your question: ASK IT.

Gman2002Z06

My Z06 has around 32 psi at idle when fully warmed up...

Peace...Gman

1972chevelle454

iTrader: (2)

Yea i guess that was more my question. Should i be concerened that stock with an ls1 oil pump i had 40 psi at idle, and now with an ls6 oil pump i only have 30

LS1_PNYTAMR

iTrader: (1)

thats basically what i thought he was asking.. he said he swapped out to another pump during the cam install and was asking if that was low? dunno how else he was supposed to ask if he should be concerned, i mean if its low and its not supposed to be then im sure he would infact, then become concerned.. so how about a AWNSER.

94bamf

I wonder if jacking up the cam bearings would cause this?

66deuce

iTrader: (1)

after i installed my H/C and ported oil pump,my motor only gets a lttle over 20psi at idle.(700rpm)it was more with the stock pump,but that's well within GMs specs.i wouldn't worry about it.

SSCamaro99_3

iTrader: (1)

I would make sure that your oil pump was properly installed. Most notably the pickup screen o-ring.

Z06er

I experienced the same on my LS6. H/C change, Katech ported oil pump, rollmaster double roller chain. Redline 10w30. At hot idle (210 F) I have 21 psi, this is with 11 qts of oil (6.5 in engine, 1.5 in the oil cooler and 3 qts in the Accusump). Depending on temp, at cold start up, oil pressure is almost 40psi. Driving oil psi ranges between 30 and 65 psi depending on rpm and temp. Idle psi is and continues to be lower than the stock oil pump.

Specs call for 7 psi per 1000 rpm, but IMHO, that's too damn low.

I dunno, but to satisfy my own curiosity, I am going to remove the oil filter shortly and cut it open to see if this is a problem.

BTW, when we did the install, the motor was out and the o ring was not a problem as we elongated the hole on the pick up tube where it bolts to the main cap to insure the the new blue o ring lined up without being pinched.

Enough to drive you crazy.

eallanboggs

iTrader: (1)

Generally speaking anything that changes for the worse AFTER you work on it isn't a good thing. That includes a drop in oil pressure. Installing a cam in and of itself should NOT cause your oil pressure to drop. You would expect your pressure to return to where it was before the install if you put everything back properly. There are only a limited number of things you could have done wrong and none of them is on easy fix. Extra redundant work is involved. The "O" ring was already mentioned. The only other thing people sometimes do wrong is when they install the Rollmaster double chain. They put the output port spacer in upside down which cuts off oil flow. Did you even remove the oil pump during your cam install or just the pickup tube? That was a good idea you had to drill the hole in the pickup tube bracket to give you a little extra room to move the tube into alignment with the oil pump input port. How much larger did you drill that hole out?

1999T/A

iTrader: (4)

I had Jeff Creech @ CAM build my engine . Its a H/C LS1 with an LS6 ported oil pump . I too was concerned about the oil pressure . I went researching and found out that that is exactly what it is supposed to put out . Porting the pump ups its effeciency(sp?) which means it moves more volume of oil with less pressure , at least that is how it was explained to me . Anyway , I have 60PSI cold Idle and 30PSI hot idle . I have went WOT yet , gotta break this motor in right ! I wouldn't worry about it . . .

68birdls1

iTrader: (46)

50 psi cold, and 30-35 hott! i also say dont worry about it...i'm not about mine

Cstraub

iTrader: (1)

A minimum of 7#'s is needed before an engine with the main and rod journal sizes of an LS1 can run without damaging anything. This is based on an idle of around 700 to 800 rpm.

Chris

Silverhawk_02TA

Also, keep in mind that the stock oil pressure gauge has the pinpoint accuracy of a shotgun. I've seen them off by as much as 15-20 psi as compared to a quality aftermarket gauge and sender. If you are really concerned, buy a decent aftermarket gauge and sender and find out what your oil pressure REALLY is.