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05-10-2004, 07:11 PM
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#1 |
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Registered User
Join Date: Jan 2004
Location: Camarillo, Ca
Posts: 79
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High oil pressure
I have high oil pressure, like the fourth quarter of the gague when I'm driving. When idelling, it is just past the center of the gague. At 60+, it goes WAY off the marked section. What should I do besides change the oil? And what kind of oil do you recommend?
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1972 1/2 ton Chevy C10 V-8 350, crate engine, with Flomaster dual exhaust. She's Old Blue the Truckinator (no relation to Arnold  )
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05-10-2004, 07:17 PM
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#2 |
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72 Cheyenne
Join Date: Oct 2001
Location: San Diego
Posts: 2,086
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Is this with the engine hot or cold? If cold then it's normal, mine used to do that also.
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05-10-2004, 08:05 PM
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#3 |
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Registered User
Join Date: Mar 2004
Location: Thorsby AB Canada
Posts: 206
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Did you rebuild the motor with a high volume oil pump lately? That could be it.
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1972 Chevy C/10 350/200r4 |
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05-10-2004, 11:24 PM
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#4 |
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Registered User
Join Date: Jan 2004
Location: Camarillo, Ca
Posts: 79
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This is warm. I'm usually on the freeway at between 60-75mph. I got a crate 350 dropped in in October and the oil was changed about 500 miles ago, so it beats me. Before on the last engine, it ran no more than half when everything was okay.
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1972 1/2 ton Chevy C10 V-8 350, crate engine, with Flomaster dual exhaust. She's Old Blue the Truckinator (no relation to Arnold )
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05-11-2004, 01:46 AM
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#5 |
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Registered User
Join Date: Oct 2002
Location: where it's hot
Posts: 1,059
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double check your pressure at the block with another gauge .
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05-11-2004, 07:15 AM
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#6 |
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Registered User
Join Date: Oct 2002
Location: West Des Moines, Ia
Posts: 3,233
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sounds normal to me if you have an aftermarket or modified motor
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Krazy Texan My Trucks are made with Wrenches not Chop Sticks 1967 GMC 3/4 ton "Johnny Cash" 1990 v1500 suburban 1967 Ford f100 Swb 4x4 "green bean" GOD BLESS JESUS, JOHN WAYNE, AND THE ALAMO |
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05-11-2004, 08:12 AM
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#7 |
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Mike
Join Date: Jan 2003
Location: west chester pa
Posts: 2,474
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When I rebuilt my 402,I used a high volume pump.It kept the gauge pegged all the time.I bought a NOS GM 80lb gauge off e-bay.Now the needle reads in the upper part of the gauge.If you take Your instrument cluster out,the gauge has a pressure reading on it.My old one was a 60lb.
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70'c/10, 71 suburban4x4 402bb, 72suburban 4/6 drop, 72k/5 4x4 blazer 4" lift 35 tires |
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05-11-2004, 10:26 AM
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#8 |
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72 Cheyenne
Join Date: Oct 2001
Location: San Diego
Posts: 2,086
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sounds normal to me too but if you're worried about it try a lighter weight oil, maybe that will help.
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05-11-2004, 10:38 AM
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#9 |
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Senior Member
 
Join Date: Mar 2000
Location: Saskatoon,SK,Canada
Posts: 2,476
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Peggin the needle is normal for a performance oil pump on a 60 psi gauge. I have a high volume pump and I also have an 80 psi gauge in my cluster. They are easy to find in the big trucks.
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Saskatoon, Saskatchewan Canada |
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05-11-2004, 02:01 PM
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#10 |
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Registered User
Join Date: Jan 2004
Location: Camarillo, Ca
Posts: 79
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Thanks guys, I guess I was just being paranoid. I looked everything over, and the whole thing is fine. Turns out that the gagues all have a tendency to be inaccurate. My Tach is so bad, I don't have one!
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1972 1/2 ton Chevy C10 V-8 350, crate engine, with Flomaster dual exhaust. She's Old Blue the Truckinator (no relation to Arnold )
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