53 Chevy 1/2 ton ---I need to replace the flexible hose that connects the fitting on the bottom of the gas tank to the fuel line. It was leaking from a crack in the hose. The petcock seems to tighten down OK to cut off the fuel from the tank , but my question is: how much fuel can I expect to run out of the line when I disconnect the hose? Will it just be whatever is in the fuel line up as far as the fuel pump, or will gravity drain the line all the way to the in-line fuel filter and the carb?