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post #1 of (permalink) Old 04-25-2000, 05:31 PM Thread Starter
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454 oil presure?

I know this isn't Jeep but it is my tow rig. I have 95 2500 4x4 Sub and the oil
pressure seems high to me. At idle the pressure sits at about 40psi but ANYTHING
over idle and I'm looking at 80psi. I run 10/30 full synthetic and I'm using a quart
every 1000 miles or so. The motor has 70,000 and Iv had it for about six months.
Thanks in advance.

WildCJ5

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post #2 of (permalink) Old 04-25-2000, 05:51 PM
sas87yj
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Re: 454 oil presure?

yea it does seem a little high.
my 79 chev van with rebuilt 350 back in 90 idles at 20psi and runs at 60psi.
i don't use synthetic but 10-30 castrol in all my cars.
anyway, using a quart a 1000 isn't right either as you know.
buuutttt, oil is not too expensive ooops syntheyic not sure![img]/wwwthreads_images/icons/smile.gif[/img]
does it leak on your garage floor or just burning the quart?
my engine is getting a little tired and uses a little also.
i have a rear main seal needs replacing-just drips a little.
anyway back to your rig-has this oil pressure always been the whole 6 months?
maybe they put in a dual volume oil pump?
[img]/wwwthreads_images/icons/tongue.gif[/img]
steve

post #3 of (permalink) Old 04-25-2000, 08:16 PM
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Re: 454 oil presure?

I have had 2 new 454's my dad 2 one new 99 motorhome the other 76 pickup
bought new mind 74 pickup new 78 new. The 70 models where 1000 to 1500 mi to a QT. I think not sure but dads&mom's motorhome I think will go alot more mi.
It is hard to get to the truth some times.
The psi could it be the sender from your motor??

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post #4 of (permalink) Old 04-25-2000, 08:50 PM
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Re: 454 oil presure?

[img]/wwwthreads_images/icons/shocked.gif[/img] That's too much pressure and very un-Chevylike. The best Chevy V8 I ever had was about 50 psi at full rpm. Thats enough to do the job, and not enough to "shear" the oil or gouge the crank. If I were you, I would seriously consider first checking to make sure the gauge is correct, and second, work on the by-pass to get better pressure regulation. You can run the tall Napa truck filter in that engine which holds a qt extra, and the NAPA GOLD is the best filter made.[img]/wwwthreads_images/icons/smile.gif[/img]

CJDave
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