LT1 oil pressure limitations....
06-26-2007, 06:35 PM
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LT1 oil pressure limitations.... I just bought a 94 z28 with 67K miles. When I start it up cold, the oil pressure is about 40psi. As the engine heats up, the oil pressure drops to 20psi at idle, and about 30psi above 1500rpm.
Is that normal, or is it a little low? My 97 corvette idles at about 28psi on a hot motor. It is an LS1 though.
Is that normal, or is it a little low? My 97 corvette idles at about 28psi on a hot motor. It is an LS1 though.
06-26-2007, 08:52 PM
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i run maybe 5psi hot but got up to 35 @ 2500 hot, and cold start up is 40 and i dont think the 5 is goot already replaced the sending unit and it only has 109,000 on it
06-26-2007, 09:39 PM
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Originally Posted by LT Malice
I take it my oil pressure #'s are pretty much normal based on your responses.
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06-26-2007, 11:09 PM
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me 10w40 mobil one syn blend i like the regular better noticed a drop when i used the blend. then a mobil filter i change it every 2k just cuz i like to see clean oil come out lol
06-27-2007, 10:52 AM
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I usually run royal purple 20-50 and pressure is 50psi cold and 40 hot...this time I used mobil1 5-30 syn and noticed that the pressure was 50psi cold and 30 hot a little bit of a drop.
06-27-2007, 11:14 AM
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Originally Posted by LT Malice
That was my next question. The car didn't come with an owners manual. I should be using 10w30, right?
06-27-2007, 01:14 PM
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I just put in some regular quaker state 10w30. ON my next oil change I might try some mobil 1 10w40 or something.
5w30 seems too thin to run in a regular old small block. I use 5w30 in my LS1.
5w30 seems too thin to run in a regular old small block. I use 5w30 in my LS1.
06-27-2007, 09:20 PM
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yeah it goes right upwhen i get on it, ijust hate seeing it right above the red i i dont really want to do a rebuild just yet only had the car 7mos and already put 11k on it love to take day trips to costa mesa or pismo just to hit the freeway and cruze
