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Old Feb 20, 2007 | 07:26 PM
  #1  
1987camarosport's Avatar
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Joined: Oct 2004
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From: watertown CT
Car: Camaro
Engine: worked 350
Transmission: automatic
Axle/Gears: 3:73
help oil press

I have a 35o outa a 72 camaro Hi flow oil pump, lunuti cam. ported head edlebrock performer intake and carb. etc etc.. thecar is non cc and i think i may be having oil presusre problems when warm... when cold its fine..
at idle 900 rpm its 0-15 psi
1500 35-40 psi
2000 40-45psi
2500 50 psi
3000 50 psi
anything over 3000 its 60+
these were taken at appz 215 degrese farenheight
The oil has beein in there since before winter. I dont drive the car IE not registerd so im not changing it till i do.. could that be the problem,
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Old Feb 20, 2007 | 10:08 PM
  #2  
Sonix's Avatar
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Joined: Jul 2004
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Those readings are when warm, or cold?

It seems ok, little low at idle though. A high flow pump should kick up your pressure across the board, and it seems like it has, except for at idle. Everywhere else it's high.

What viscosity of oil? What brand also?
Are you using the normal pressure spring, or the high pressure one? (just a side question...)
Did you build the motor, and know the clearances, or...?
Any oiling modifications? Standoffs in lifter valley, drilled holes in timing chain area plugs?
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Old Feb 20, 2007 | 10:11 PM
  #3  
taonindo's Avatar
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Joined: Jun 2004
Posts: 405
Likes: 2
Car: 82 firebird
Engine: 406
i would worry if it dropped to zero (oil pressure). hook up a after market mechanical oil gage ... that will tell you what the pressure is really doing ... good luck... tao
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Old Feb 20, 2007 | 10:25 PM
  #4  
84z28350's Avatar
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Joined: Aug 2005
Posts: 3,004
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From: Yellowknife, NWT, Canada
Car: 84 Z28
Engine: 357
Transmission: TH-350C
Axle/Gears: 3.43
the general rule of thumb is 10psi per 1000rpm

You are definately fine, even on my new build with a stock replacement oil pump it only sees around 10-15psi @ 6-700rpm idle
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Old Feb 20, 2007 | 10:53 PM
  #5  
1987camarosport's Avatar
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Joined: Oct 2004
Posts: 161
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From: watertown CT
Car: Camaro
Engine: worked 350
Transmission: automatic
Axle/Gears: 3:73
to answer the questions i did not build the motor a friend did.. I have a mechanical gauge hooked to the port behind the dist.. i think it has 5 30 in it bought it with fresh oil... he said that it was built with all performance parts... the oil pan isnt the stock one either... also this just started o happen the other day... im goning to change the oil check for silver tint if not juist gunna put new oil in it.. hook up another gauge up front and see whats goin on... any more tips pulling the valve covers? the car has headers so it loud i doubt ill be able to hear a ticking noise or whaty not..
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Old Feb 21, 2007 | 03:07 PM
  #6  
1987camarosport's Avatar
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Joined: Oct 2004
Posts: 161
Likes: 0
From: watertown CT
Car: Camaro
Engine: worked 350
Transmission: automatic
Axle/Gears: 3:73
ok wel it seems i fixed the problem did a new oil change.. bought a new mech oil gauge to replace my old sun pro and i have at idle 900-1000 rpms. 10 psi.. but in gear idling ihave 5 or 6..
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