low oil pressure

[82sbshortbed]

My 84 305 does the same thing. 10w30 mobile1 and mechanical gauge. Just changed the oil and filter. Once warm it's down to 5 to 10 range at idle but up to 20 to 30 on the highway. I figured as long as it goes up with rpm increase I'm good.

Same oil in the 454 but it seems to stay around 20 to 30 at idle warm. And over 40 on the highway. So I don't know if I need to be concerned about it or not.

 

[squaredeal91]

I would also recommend a (high volume) oil pump from melling.

 

[Octane]

Yeah I’ve been trying to find a good synthetic straight 30w oil and it’s not easy to find.

Advance Auto,O Reillys and Walmart Supertech in my area of Atlanta metro has 30wt oils