Normally the rod bearings will not produce that kind of oilpressure 
situation.  It is the mains and/or the pump assembly that will do that 
to you.  If a rod (s) bearing were that bad, it would be knocking badly, 
but a main can be bad and still run rather acceptably.  Unless the 
engine is just plain worn out, I would be looking at the pump assembly. 
 Take care, Bill
Red Midget wrote:
>Now the questions
>
>Is it necessary to pull the head to replace just the rod bearings ?
>
>What else can I check and or replace with the engine in the car that may help 
>improve the low OP situation?
>
>Thanks again for all the help and suggestions both on and off the list.
 
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