[Mike Taylor 3601]

Is pressure good at idle then drops at RPM or going down track? if so check distance between pick up and pan 3/8-1/2, any more or less can cause cavitation and pressure will drop when revved or down track.
I used alot of those UltimateII pans never had problem with them.
Had customer with motown small block that would drop pressure when revved up and down track we made changes tried restrictors to cam bearings I double checked clearances etc. for him, he had melling select pump with 3/4 pick up tube he tried two of them same thing, I then remembered selling one to round track customer and them having same problem,so we put 5/8 pickup melling select pump in fixed it , later talking to melling they said probably was more of windage issue and smaller pickup was'nt effected as bad.
I just stay with 5/8 pick up though now.
Carl and Ed may have hit nail on head with windage
Mike Taylor