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09-04-2009, 05:00 PM
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#1 |
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Badass
Join Date: Jan 2009
Location: lox. fl
Posts: 4,586
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oil pressure
oil pressure .mines been running high like 40-60 is that bad?
a few weeks ago it was like 20-40 where sould it be at? oh its a stock 305
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Think outside the box? -84c10 (1stcar)→My Build←  -00 Saturn 5spd drop a gear and disappear! 1/4:13:90 
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09-05-2009, 09:47 PM
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#3 |
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Registered User
Join Date: Jul 2009
Location: bullhead city az.
Posts: 51
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Re: oil pressure
have you recently changed oill or done anything else to the motor
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09-06-2009, 10:22 PM
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#5 |
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Registered User
Join Date: Jul 2009
Location: bullhead city az.
Posts: 51
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Re: oil pressure
40 to 60 pounds of pressure is not a problem, but if you only had 20 to 30 psi before. then something had to change somewhere. the filter has a bypass valve inside of it which could possibly stick shut and cause the pressure to change. also the oil pump has a pressure regulater valve that could be sticking. i have seen cam bearings spin in the block and cause the pressure to go up. your gauge could be acting up also. i would change the oil and filter and cut the filter open to check for metal. is your engine making any noise.
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09-06-2009, 10:29 PM
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#6 |
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Badass
Join Date: Jan 2009
Location: lox. fl
Posts: 4,586
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Re: oil pressure
no noises.like ticking or clickin.its been running good.ive been thinking the gauge was acking up.is there any way to check this? where is the oil pressure sensor?
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Think outside the box? -84c10 (1stcar)→My Build← -00 Saturn 5spd drop a gear and disappear! 1/4:13:90
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09-08-2009, 08:28 PM
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#7 |
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Registered User
Join Date: Sep 2009
Location: mt.morris pa
Posts: 5
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Re: oil pressure
hey the oil pressuresending unit is located right behind the dist right at the rear edge of the intake on a sbc i dont know where it is at on other motors
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09-09-2009, 01:05 AM
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#9 |
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Registered User
Join Date: Mar 2009
Location: TN
Posts: 410
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Re: oil pressure
I'm sure your motor is fine, almost all chevy's I've seen do that.
A safe rule is 10 psi for every 1000 rpm. I drove my '68 Satellite with a 318 with NO oil pressure for 10-15 miles with absolutely no problems. Ended up doing a rebuild, but it was still mechanically fine.
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'69 Dodge Charger R/T 440, 727, 3.55 Sure Grip '68 Plymouth Road Runner 383, 727, 3.23 Sure Grip '89 Dodge Diplomat ex cop car 408, 727, 3.55 Sure Grip '77 Dodge Monaco ex cop car 440, 727, 2.71 '79 Dodge 'Lil Red Express pickup 360, 727, 3.55 Sure Grip '12 Dodge Challenger SRT8 392, M6, 3.92 '85 Chevrolet C-10 SWB 2wd 305, TH350, 2.73 |
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09-09-2009, 06:19 AM
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#10 |
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Registered User
Join Date: Aug 2009
Location: Alpharetta, GA
Posts: 32
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Re: oil pressure
did you change the type or weight of oil?
another thing to note, it is not uncommon to see a sbc with 5-10psi at idle. on my 350, it runs about 45psi @ 3k. at idle, it's 10-15psi.
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09-09-2009, 06:31 AM
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#11 | |
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Badass
Join Date: Jan 2009
Location: lox. fl
Posts: 4,586
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Re: oil pressure
Quote:
at start up its at like 20-30 and idling it says the same around 3-4k it gits up pritty high at 40-45.but just driving at 2100 its at 35
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Think outside the box? -84c10 (1stcar)→My Build← -00 Saturn 5spd drop a gear and disappear! 1/4:13:90
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09-09-2009, 06:45 AM
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#12 | |
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Registered User
Join Date: Aug 2009
Location: Alpharetta, GA
Posts: 32
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Re: oil pressure
Quote:
is that at cold start-up or warm start-up? oil pressure should be greater during a cold start-up.
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09-09-2009, 08:52 AM
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#13 |
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Registered User
Join Date: Sep 2009
Location: mt.morris pa
Posts: 5
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Re: oil pressure
i know when my 86 chevy k10 with the 305 when its cold it pegs the gauge out till it gets warmed up like 10 mins then goes to about 45-50 pounds i use 10w-40
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09-09-2009, 09:41 AM
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#14 |
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1962 C-10
Join Date: Apr 2005
Location: Las Vegas, New Mexico
Posts: 4,978
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Re: oil pressure
Your pressure is fine. Nothing to worry about. From the numbers your saying...and your not hearing any noises or differences, just keep driving.
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Joseph Chavez  "See the USA in a Chevrolet!!" ......................_____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1962 C10 Shortbed Fleetside 327/th350 GV overdrive 1974 C10 Longbed Fleetside 350/th350 "The Trash Truck" 1999 Chevy 2500 OBS, Longbed 5.7/4L80E 4x4 2015 GMC Sierra SLE 1500 4x4 |
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