Loosing fuel pressure

I had this same problem with my 360 in my 72 duster and with today’s fuel with higher ethanol content the fuel was vaporizing. I installed a bypass regulator and never had the problem again. To return the fuel to the factory tank I welded a bung in the filler neck and the unused fuel dumps right back into the tank.

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I think if nothing changes fuel wise and you are making any kind of power you’re going to need a return style regulator.

A block mounted fuel pump gets as hot as every other part of the engine and that causes grief too, not considering all the rest of the issues from todays fuel.

I think it’s a necessary evil at this point. Especially if you live where it’s hot.