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Author Topic: oil pressure and coolant/engine temp  (Read 3962 times)

Offline chevy1

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oil pressure and coolant/engine temp
« on: May 18, 2007, 09:44:40 pm »
Hey everyone, I just got a 1986 chevy half ton with the 350 4 barrel. Was wondreing if anyone knows what my engine temp and oil pressure should be at under normal driving conditions? My temp. stays around 230 degrees, even after a coolant flush.Maybe bad thermostat? My oil pressure hangs around 20 when idlling, maybe Oil pump? Any help would be great. Thanx
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Offline Blazin

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Re: oil pressure and coolant/engine temp
« Reply #1 on: May 19, 2007, 07:39:16 am »
Sounds a bit warmer than it should be. Does it over heat? An new t stat couldn't hurt it any.
 Oil pressure is more than an oil pump. If your rod, main, and or cam bearings are worn it will result in low oil pressure. A new pump might help some but if it is bearing wear it won't make a huge difference.
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Offline chevy1

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Re: oil pressure and coolant/engine temp
« Reply #2 on: May 19, 2007, 08:48:52 am »
My chevy hasn't overheated yet, but was concerned about the high temp. I'll try a thermostat. If a bearing was going wouldn't it be making some noise? The motor sounds great except for a small exhaust manifold leak that gives me a small tick. Thanx for the info
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Offline VileZambonie

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Re: oil pressure and coolant/engine temp
« Reply #3 on: May 19, 2007, 10:57:10 am »
There's nothing wrong with 20 PSIG oil pressure. If you want to try a heavier oil that will help. I agree change T-stat flush radiator and see what happens
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Offline Blazin

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Re: oil pressure and coolant/engine temp
« Reply #4 on: May 21, 2007, 09:42:18 pm »
Bearings can wear and not make any noise. I have pulled bearings out of a perfectly good running motor and had them be completely defaced.
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Offline 87GMC2WD

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Re: oil pressure and coolant/engine temp
« Reply #5 on: September 27, 2009, 03:42:10 pm »
sorry to thread steal but what about 10 psi at idle after warming up?
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Offline Captkaos

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Re: oil pressure and coolant/engine temp
« Reply #6 on: September 28, 2009, 03:04:03 pm »
10 at idle is acceptable.
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Offline 87GMC2WD

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Re: oil pressure and coolant/engine temp
« Reply #7 on: September 30, 2009, 06:39:01 am »
really? i thought that would have been to low. I just got an 87 v20 but its been messed with.  supposedly it has a 383 with a 400 tranny, and the oil pressure seemed to me to be very low. what is acceptable driving down the road?
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Offline Captkaos

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Re: oil pressure and coolant/engine temp
« Reply #8 on: September 30, 2009, 10:45:14 am »
30lbs
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Offline 87GMC2WD

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Re: oil pressure and coolant/engine temp
« Reply #9 on: September 30, 2009, 07:29:18 pm »
im running like 20
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