He is making just shy of 1000hp. The -8's are what the carb builder wants for this application. Don't really wanna get into the pressure, volume debate but suffice it to say -8 is what needs to be there.
We run an EFI750 pump dead headed to the regulator with just a bypass for the pump with no issues. MagnaFuel sold us the system just this way.
Then it's not truly deadheaded if it bypasses at the pump now is it.
That's true, but most consider a return system one that returns to tank from the reg. My wife's 79 300 (stock fuel system ) actually has a return line off the fuel filter ( after the mechanical pump ). I think the return fitting off the filter has a .060" orifice in it. Pretty sure they ( Chrysler ) were trying to address vapor lock issues.
