I have an older Moroso pump, four vain. I have gotten 10.5 inch vacuum in the past without any bleeder to control vacuum level.
With the new build, I had problems getting 3 or 4 inch vacuum, but am not sure why. My moroso pump has maybe 300 runs on it, is 18 years old. The fittings are 90 degrees apart ,not the newer 120 degrees.
My new short block will have DLC coated piston pins, so that area is covered. I am Looking for info on how much vacuum to run, and anything I should know to stay out of trouble. Thanks in advance, Greg