Need info on 251 engine

[Alex Blair (RIP)]

Originally Posted by Michel D

Ok dose some one no what could make the oil pressure on my engine fluctuate 10 to 15 psi!
I no that my gage is ok.
it is not the oil filter.
The oil pressure starts at 45 psi cold and start fluctuating between 35-45 psi. and more the engine warms up the pressure goes down and down!

May be the oil strainer is taking some air!

Micheal..This is normal for the oil pressure to drop back after warming up..
and it will go down after warming up and will fluctuate with changes in RPM..
My old flat heads would start out cold at 40-50 PSI and drop to zero pressure at an idle warm..If it bothers you..put a piece of tape over the gage ..so you can't see it ..Sounds normal to me..