340 oil pressure? Help

Changing to heaver weight oil to raise you OP is a band aid fix. I run 10-30 Lucas oil in my Dart 360 and my Barracuda 416. This is more than enough in the way of oil. Dart is 70 PSI cold, and 25 hot at idle in gear. Barracuda is 80 cold and 35 at idle in gear, though it has a looser convertor.