I have a 3.1 RS and the oil pressure is kinda ridiculous. I know that its supposed to be higher than most other cars.. or at least that wat it says in the book i have. BUt when im idling the needle basically just lays down at well over 80psi then it goes down to a respectable 40-50 when on the gas if i remember correctly.

I would say that the needle goes as far as possible with out actually laying down

Any ideas?

i heard somewhere to check some kinda oil pressure valve or.. sending switch ... i dont remember. If this is the case... Where is it?

 

it should be higest when you're in the throttle. more RPM = more oil preasure. i'd put a mechanical gauge on the engine and see what it says.

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ICON Motorsports
1st & 3rd

 

Its the oil pressure sending unit, located just above the oil filter. It looks like a 35mm film canister, with a plug sticking out of it.

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West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
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I agree with kevin91Z. Altough he didnt explain it very well. The sending unit tells your needle what to do. It has no effect on oil pressure.

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91 Camaro RS, 305 TBI
No mods yet...Hopefully:
Convert to dual-cat with headers and Borla catback exhaust.
Edelbrock MPFI system.
RAM air hood & Z28 wing.
Z28 cam.
ABS system.
Positraction rearend with rear disc brakes.
Rebuilt front and rearend suspension with polygraphite bushings.
Strutbrace.
Rollbar.