One more question now that I think about it. The oil pressure seems to be fine when you start it up and drive around. (about 60 psi) When you put it in park it will go to about 30 psi or just under that. When you put it into gear and just sitting there idle it will go to 15. Is this normal or no? I know my 351W in my 66 stays around 55 driving and 30 idling, after it warms up and you drive around it drops to 20 idling.
15 just seemed a bit too low to me but what do I know?