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Old Dec 6, 2007 | 08:13 PM
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Default oil pressure
what is a normal reading for oil pressure at idle?
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Old Dec 6, 2007 | 08:15 PM
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Originally Posted by tonyro
what is a normal reading for oil pressure at idle?
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Depends on your oil pump, etc. But 15 on the low end to 40 on the high end.
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Old Dec 7, 2007 | 03:25 PM
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As a general rule of thumb, about 10 psi for every 1000 rpm.
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Old Dec 7, 2007 | 03:56 PM
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Under normal conditions with 30 wt. oil and mild temperatures you should see 30-40 psi at idle when cold, and this will drop to 15-25 psi when hot assuming you're using a stock oil pump.
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Old Dec 7, 2007 | 06:25 PM
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Many stock Chevy V8 engines/oil pumps will only generate about 10 psi at warm idle. It's not a big deal with a stock engine. If you have high-lift cam with solid lifters, you need higher idle pump pressure.
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Old Dec 9, 2007 | 05:39 PM
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Mine startsout @60 staying there for a while before dropping to 40...............
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Old Dec 9, 2007 | 07:05 PM
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I've got the old Z28 oil pump in mine and its stays at about 55 at 800 rpm.
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Old Dec 10, 2007 | 02:56 PM
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My indicated oil pressure stays at 40 p.s.i.
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Old Dec 11, 2007 | 06:08 PM
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Originally Posted by 7T1vette
Many stock Chevy V8 engines/oil pumps will only generate about 10 psi at warm idle. It's not a big deal with a stock engine. If you have high-lift cam with solid lifters, you need higher idle pump pressure.


If you want to confirm that 10 psi is OK, you will find that information in an '69 owner's manual.
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