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Old 02-12-2024, 06:58 PM   #5
Tom
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Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,763
Re: Do oil pumps fluctuate?

The OE oil pan on my 98 was slightly dented on the bottem, I imagine from a failed jack attempt or something stupid. Wasn't big though. Anyways, it was always about 60psi at startup in the winter. I recently put a new pan on it, and now its 80+psi [gauge pegged] at startup in the winter. Tells me it wasn't getting full oil feed to the pickup with that dent. Might be something like that with yours, easy to check.
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-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle.
-98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes.
-02 Suburban 4x4: leveled front
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