I have a new fuel tank sending unit/pick up I want to use. It does not have the additional pipe for the return line. Is the return line necessary? Is there a mechanical fuel pump for a 455 that does not need a return line? Any info would be appreciated.
They were used for vapor lock main use was for in town city drives. It can be blocked off at the pump, but be aware that if u have a fuel problem u will have to bleed it.
