What is the correct fuel pressure for a stock six. I have to use
a Holly pump while mine is refurbished.

Thanks very much

3.5 pounds +/- 1/2

the stock bosch carb fuel pump (pn 0580960009) runs at 4.3 psi .... the relief valve opens at 2.8 to 4.3 psi and delivers 80 liters/hr

Thanks Very Much!