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Oil pressure

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Old May 20, 2013 | 11:15 AM
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Oil pressure

How much psi of oil pressure should a 1990 4.9 have
 
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Old May 20, 2013 | 11:42 AM
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how much do you have
 
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Old May 20, 2013 | 03:19 PM
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Only 40 @ 2000 rpm and I'm cammed over high performance lifters so I'm a little worried
 
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Old May 20, 2013 | 04:12 PM
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that sounds allright, how much do you have on idle, if you are worried install a higher flow, not a higher pressure pump, with higher flow comes higher pressure the pumps advertised as higher pressure usually just use a more restrictive oil path
 
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Old May 20, 2013 | 04:40 PM
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25 psi @ 600 rpm
 
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Old May 20, 2013 | 08:13 PM
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What weight oil are you running? How many miles on your engine?
 
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Old May 20, 2013 | 09:46 PM
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10w30 and 74,000 I just rebuilt it from the Cam up all new valve train and head there's only 75 miles on the rebuild
 
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Old May 21, 2013 | 12:51 AM
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Those numbers sound fine to me. I don't see any reason you'd need any more than that. If you did have much more pressure, it would most likely cause oil leaks.
 
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