Inline fuel pump vs tank fuel pump
I am simply unconvinced that an in-tank pump has significant advantages. Obviously, "the lower the better" for an inline, and you want a very low restriction suction setup
Not an expert on this topic, but I can think of two potential advantages to an in-tank pump.
1. It is sitting in a body of fluid and should run cooler (provided there is enough gas in the tank).
2. It has the potential to use a bucket setup where a venturi feature sucks gas out of the bottom of the tank and keeps the buck full even when the gas tank is almost empty.
Th first probably isn’t much of an advantage unless maybe pavement temps reach +105.
The second is much bigger, but only if you can use some kind of OEM pump as none of the aftermarket setups use anything like that. Closest I have seen is the aeromotive pump with the foam. In the case of a car that corners well, I think this is necessary to run down to a quarter tank or less on a road course. I have heard of issues with every aftermarket system out there in this situation. Oh, and this is with EFI, carbs carry their own reserves and are much less susceptible to momentary hiccups due to a pickup uncovering.
I would have argued that in-line pumps don’t seem to last but several here seem to have had good luck and Ford ran some OEM setups so I would have had to agree I was wrong. Must be an issue of install and design that cause longevity issues. I would argue thought, that an in-tank pump does seem to be easier to make last as there seems to be fewer potential design issues.
