Mechanical fuel pumps

"BUT are you saying if I'm making 576HP with no signs of fuel starvation(lean) clear to 6800RPM, I'm OK. Even though PRESSURE drops to 4.1PSI?"
Reread my post. NOWHERE did I say that.If you have a melt down dont put it on me.
My post is about fuel volume delivery, and how to determine if you have enough.
BTW; how often, and for how long is your engine required to put out its, full load, full rpm,maximum dyno hp?
I tell you what though, if I had your power level, I would get an electric pump.That engine is just too pricey to risk on something this easy to prevent. I would, however, get a pump that is designed to be draw-thru, and run them in series. I would turn the electric pump on with a Hobbs sw and a rpm relay to come on at the time when the engine needs it. Say at around peak torque rpm and 6 inches vacuum. Then you never have to hear that thing. And I might use 1/2" aluminum line,armored where required, if I planned to go racing.. No A/N for me. If I could put the pump in the tank I would, but as a part timer and a street car, I wouldnt lose sleep over it not being in there. If you have serious traction a sump is more than just a good idea.

I am just a man.Semi-retired.With a lifetime of learning and a headful of junk thats dying to get out.I just want to help.