I have an external pump and my oil pressure never dropped below 70psi. On my setup, there is a feed that runs in the motor at the front which oils the mains, rods, etc.
There is another line that runs just behind the head on the passenger side. My oil pressure runs just behind this point. So, has to be something wrong past the gauge.
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SVO siamesed 351 stroked to 417ci,Yates heads, solid roller,Trans King glide and a little blue bottle
of giggle gas.
My Car