1966 425 51,000 miles Car set 15 years. Oil pressure at sender reads 30 lbs at idle. It sounds great but not getting any oil to rockers . Any ideas ?

 

How did you check for oil at the rockers? On an Olds the oil does not shoot out of the pushrods... it takes a bit of time for the for oil to bleed out of the tops of the pushrods and onto the rockers. You can remove the pushrods and check and clean if necessary.

 

Started it with valve cover off let run a couple minutes saw no sign of any oil. I pulled a couple push rods they were clear with no sign of oil.. If you let it run for over 5 minutes i start to hear a slight rattle sounds like it is coming from the front of the motor.

 

5 minutes of run time should get you some oil to the rockers .i wouldn't keep starting it until you get to the bottom of it .not sure why your gauge is showing 30 lbs at idle but i wouldn't trust that .maybe pull the distributor and check the oil pump shaft .Just some suggestions im not an expert but there are some here.

 

I pulled the out sending unit and hooked up a oil pressure gauge that is how i know the pressure. Just does not make sense that is the top of the motor right next to the oil galleys that go to the lifters. Engine looks very clean inside.

 

Maybe pull thedistributor and run the pump w a drill for a while

 

Oil flow to the rockers is typically slow in the Olds engines. Higher viscosity oil equals slower flow. The rate of flow is regulated by the lifters. If you want faster flow, you can modify the lifters. Just file away a bit of the push rod seat where it meets the disc in the lifter.

 

I agree with retro . Pull the dist. And use a drill to spin the oil pump shaft (counterclockwise)and see if you can get some oil up to the rockers . I use a socket that fits over the shaft I think 5/16 (not certain on the size ) connected to and extension .be sure to tape the socket to the extension so there is no chance of losing it in the motor.