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My oil pressure after cam install is at 25-30... is this ok?

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Old 03-01-2009, 09:21 PM
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Default My oil pressure after cam install is at 25-30... is this ok?

I recently did a cam swap and installed a ported oil pump and new o-ring... my pressure is at 25-30 at idle. my stock pump pushed 35-40.

my question is... is this enough oil pressure at idle?
Old 03-01-2009, 09:28 PM
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ha I only have 12psi at idle but also I have a ragged out LT1. your oil pressure is fine you shouldn't have anything to worry about. you may of lost that small amount of pressure due to more oil clearance on your new cam I measured my stock cam journals and the ones on my new comp cam and it was .002 smaller on average.
Old 03-02-2009, 11:17 AM
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Mine is at this PSI also. As long as it goes up when you apply the throttle then you should be ok
Old 03-02-2009, 11:24 AM
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I also have a P&P oil pump with the same psi at idle. Mine came from Vengeance. All it said was better flow it didn't say anything about more pressure. If it goes up when you hit the go pedal it should be fine.
Old 03-02-2009, 11:24 AM
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Originally Posted by 1BAD_LS1
I recently did a cam swap and installed a ported oil pump and new o-ring... my pressure is at 25-30 at idle. my stock pump pushed 35-40.

my question is... is this enough oil pressure at idle?

lol mine is like 15psi after it comes up to temperature. i dont think it goes above 50psi @ WOT
Old 03-02-2009, 01:31 PM
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Originally Posted by 98TADRIVER
lol mine is like 15psi after it comes up to temperature. i dont think it goes above 50psi @ WOT
do you still race the car? have you had any problems with it? i assume you are still on the stock pump.
Old 03-02-2009, 02:02 PM
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after some resarch this is what i have come up with guys....

ported pumps MORE VOLUME = LESS PRESSURE
stock pumps LESS VOLUME= MORE PRESSURE.

so with a ported pump you are actually moving more oil with less pressure.... hope this makes sense.
Old 03-02-2009, 02:18 PM
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the 5.3 I just rebuilt for my chevelle only has about 30PSI at idle with motor hot or cold. At about 7K it has about 80 PSI.. I have a high volume pump from GM..
Old 03-02-2009, 04:42 PM
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my pump will hit 60-65psi at 6000.... i was talking at idle.... 80 is alot of oil pressure!
Old 03-02-2009, 04:49 PM
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yeah I have a big thing for oil PSI the more the better I think... but i think that if I did high RPMs for to long all the oil mybe in the top of the heads..lol..
Old 03-02-2009, 05:40 PM
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lmao.... thats a funny thought....
Im still used to the old school motors when to much oil pressure was a bad thing...
Old 03-02-2009, 06:19 PM
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Technically you have enough pressure. But I would be questioning if everything was installed correctly. I would want to see a little more pressure than that. If it were me I would call the supplier of the pump and ask them what numbers you should be seeing.
Old 03-02-2009, 07:46 PM
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Originally Posted by 1BAD_LS1
after some resarch this is what i have come up with guys....

ported pumps MORE VOLUME = LESS PRESSURE
stock pumps LESS VOLUME= MORE PRESSURE.

so with a ported pump you are actually moving more oil with less pressure.... hope this makes sense.
Makes alot of sense. Ok his problem is solved help me with my problem 12 psi at idle oh never mind I know whats wrong it's a wore out LT1 lol
Old 03-02-2009, 08:05 PM
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Originally Posted by rusty2198
Makes alot of sense. Ok his problem is solved help me with my problem 12 psi at idle oh never mind I know whats wrong it's a wore out LT1 lol
LMAO!!! Thats funny...

I just sold a 383 LT1 for $700 that had 5000 miles on it.... to a kid in my home town, my friend bought a 95 camaro with the lt1 in it and i bought it off him. we built it up then decided to sell it....
Old 03-02-2009, 08:05 PM
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I installed a high pressure pump and after a while my idle pressure was at about 8-10psi. It ended up being the cam retainer plate blowing out the seal and bolts being loose. Just a thought.
Old 03-02-2009, 08:27 PM
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Originally Posted by blkbird
I installed a high pressure pump and after a while my idle pressure was at about 8-10psi. It ended up being the cam retainer plate blowing out the seal and bolts being loose. Just a thought.
If it goes any lower i might tear it down and check things out....
Old 03-02-2009, 08:32 PM
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Yea she is coming apart hopefully next month I already got my new probe pistons and 6 inch eagle rods just waiting on the funds to get the machine work. Cam retainer plate hmm even if thats not it may be a good idea to replace it when I have the engine apart.




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