340 fuel issue stalling or excessive crank

foot to the floor cranking and black carb definately flooding indicators how much fuel pressure? try around 5 to 5.5 psi. if adjustable
i don't have but am getting a fuel pressure guage and regulator this week. any suggestions which to run?
i know it is running rich i turned in adjusters to max lean and backed each out 1.5 turns to start. i am going to check timing and fuel bowl level settings monday.