LOW OIL PRESSURE

[Mr. T]

On all the SBC engines I have rebuilt in the past, there has only been one time that I witnessed sparatic oil pressures at different rpm's. It was an easy fix, and believe it or not, the oil pressure sending unit was faulty. I installed a new one, and the oil pressure at idle increased by 10 psi.

[55chevy]

Think I should try a better oil pressure guage first?
I got the high dollar $9.99 Harbor Frieght triple guage package special in use at the moment...

[Pantera]

Come by and I will loan you a SW gauge. It still does not sound like a gauge problem but you just never know. Like I told you in the email this morning to check it out first.

Pantera

[rsatz28]

For what it's worth, my 302 does the same thing running 10-40 oil...and I know I have a Melling high volume pump. I picked up about 5 psi across the board when I went to a 20-50 oil.

[55chevy]

That could be a cause. I'm running 10-30. I think the oil pressure is ok in the motor. I was just a little paranoid on my first trip out with it I guess. Anyway, now thats the least of my problems.. now my tranny is going out!.. Slipping like crazy on the way home today.. I think it's 4 speed time..

[70 ls6 convert]

Did you plastic gauge the rod and mains 1.5 to 2.5 is good ,did you replace your cam bearings ? if thats all good,after you check your oil pressure with a manual gauge and its still bad,its your oil pump.