Quote Originally Posted by R Pope View Post
A high pressure pump just has a stronger relief spring in it, it won't help your pressure at low RPM. A high volume pump will keep up to the looser clearances the shop probably built into your engine.
What weight and brand is the oil? Some engines just don't like some brands, try another one.
yup i would look at oil break down try a race oil 40wt i would say she just big on main and rods clearances that ok for race or something getting the hell beat out of it. i have had some bbc that were a bit low at idle thats ok as long as oil psi builds thru rpm s do not worry about that 10 lbs for every 1000 of rpm you may want to look at your oil for gas you could be out of tune or no choke and small stop and go stuff your going to change out your oil more