I installed a Precision
Oil Pump blue printed pump in my Craft build Pond aluminum 482 short block. On start up the pressure climbs past 110 psi. As the motor warms up the pressure will drop to around 35 -40 psi and around 90-100 psi under hard acceleration. Cruising at 70 it runs around 75-80 psi. I am running 10-40 wt. non-
synthetic oil. I was concerned about pressure when I first got the motor together and running. Spoke to Doug about the pressure of his pumps (personal friend). He stated that it should not be a problem and would come down as the motor warmed up and wore in to a degree. Of course it's aluminum and seams to take longer to warm up and I never jump on it till it is warm. I am confident in both the products I got from Precision and Craft. Picture of Doug helping adjust the valves on the 482.