 MikeB
Senior Member
Posts: 9388
Loc: Plano, TX
Reg: 08-28-03
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07-26-12 05:56 AM - Post#2252319
In response to bowtiefan
5 psi at idle and 25 psi at 2000 RPM is not going to ruin the engine, but even with a stock pump, I'd expect to see 15-20 at idle and 35-45 at higher RPMs.
Do you remember what the pressure was back before your stored it?
Typically, low oil pressure is a function of main and rod bearing clearances.
As suggested above, I'd try higher viscosity oil -- maybe 20w50. And if that doesn't do the trick, take a look at the pickup screen.
I have no experience with Marvel and those type products.
Ah, I just remembered this: When I bought my 55 many years ago, it had a 350 with low oil pressure very similar to yours. Anyway, I installed a new high volume, high pressure Melling M55HV pump and changed the rod bearings. Pressure then jumped significantly. I don't remember the exact numbers, but I'd guess they were 15-20 at idle and 45 on the highway. That engine ran great for another 3-4 years, and when I sold it, it was still making good oil pressure.
Real Hot Rods have a Clutch!
1955 210 2dr: 327, Brodix IK180 heads, Jones cam, Muncie M20, Wilwood front brakes
1969 C-10 pickup: 350, TH350
My car pictures
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Edited by MikeB on 07-26-12 05:58 AM. Reason for edit: No reason given.
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