What if you bypass the mech pump and the regulator?

What pressure does the elec pump show?
Nice and steady on the gauge?

I also liked the suggestion of running a hose from the mech pump into a can and bypassing the entire inlet side of the system.

68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads