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Is my oil pressure low at idle?

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Old 05-14-2009, 11:39 PM
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Is my oil pressure low at idle?
It's a rebuilt to stock LT1. Standard pump and everything. I have drove it maybe 100 miles. When cold the pressure is great. After the engine is hot driving it will run about 45-50 but when I'm at an idle in gear "automatic" hot it will get down to 25-35 at 600 RPMs. Does that seem low at idle when hot or is that normal?
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Old 05-14-2009, 11:48 PM
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If it was below 10psi at idle I would maybe start to get concerned.
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Old 05-14-2009, 11:53 PM
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it's never been that low. i think 25 is the lowest it has been at idle.
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Old 05-15-2009, 12:47 AM
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25psi at hot idle is lots. You have nothing to worry about.
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Old 05-15-2009, 02:26 AM
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That pressure seems normal to me.
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Old 05-15-2009, 06:55 AM
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Originally Posted by mvvette97
It's a rebuilt to stock LT1. Standard pump and everything. I have drove it maybe 100 miles. When cold the pressure is great. After the engine is hot driving it will run about 45-50 but when I'm at an idle in gear "automatic" hot it will get down to 25-35 at 600 RPMs. Does that seem low at idle when hot or is that normal?
That's pretty good idle pressure.
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Old 05-15-2009, 07:36 AM
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The normal range when hot with a stock pump that ive seen is 15-18 psi .... and 25 is really good for a stock pump..
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Old 05-15-2009, 08:28 AM
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Originally Posted by mvvette97
It's a rebuilt to stock LT1. Standard pump and everything. I have drove it maybe 100 miles. When cold the pressure is great. After the engine is hot driving it will run about 45-50 but when I'm at an idle in gear "automatic" hot it will get down to 25-35 at 600 RPMs. Does that seem low at idle when hot or is that normal?
That`s prefect! Mine runs the same psi.
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Old 05-15-2009, 11:46 AM
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You do NOT have a problem
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Old 05-15-2009, 12:39 PM
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Originally Posted by shoebox
That's pretty good idle pressure.
This.
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Old 05-15-2009, 10:31 PM
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good to hear. I'm kinda new to LT1s so I wasn't sure. The only reason I was wondering is because my LS1 never gets below 40 psi but I guess every engine is different
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