Sooooo, for the time being, until I can scrape together the funding for a full CFI-to-carb conversion (gonna be awhile, it seems) and beside the fact that I'm not sure if I could squeak through emissions with a carb'ed setup, I'd like to at least convert my exhaust from singles to duals. Small problem: I have two fuel pumps, and the high-pressure pump and the fuel filter are both mounted right where the passenger-side muffler need to go.
I remember reading somewhere that in '85 some of the CFI cars switched to the same single-pump setup that Ford used on '86+ EFI 5.0's, and that that '84 and early '85 CFI two-pump setup was just a temporary setup they had been using in the LTD II's and early Mark VII's, as well...
And being that the operating range of fuel pressure is pretty much the same between CFI and EFI motors, I got to thinkin'... (and smoke started rolling out of my ears 
).
Sooooo ... being that CFI uses a low-pressure in-tank pump and a high-pressure external pump, would I be able to get away with just switching out the stock tank for an '86-'93 tank with just one fuel pump (the in-tank high-pressure pump) so I can delete the external pump and relocate the filter up closer to the tank where it's supposed to be? I can score a used pump, tank, and sending unit altogether for $25 locally, and if the swap would work, I would later on be able to just drop the tank, remove the high-pressure pump, and poke in the older low-pressure pump if/when I get around to converting to carb.
Anyone done this before? ... or does anyone know if the single high-pressure pump would work in place of the low-high two-pump setup?
Also, will the sending unit for a later-model ('86+) 5.0 hook right up or at least can be wired up to work with the '84? ... or will I be losing the functionality of my fuel level gauge?
I remember reading somewhere that in '85 some of the CFI cars switched to the same single-pump setup that Ford used on '86+ EFI 5.0's, and that that '84 and early '85 CFI two-pump setup was just a temporary setup they had been using in the LTD II's and early Mark VII's, as well...
And being that the operating range of fuel pressure is pretty much the same between CFI and EFI motors, I got to thinkin'... (and smoke started rolling out of my ears ).Sooooo ... being that CFI uses a low-pressure in-tank pump and a high-pressure external pump, would I be able to get away with just switching out the stock tank for an '86-'93 tank with just one fuel pump (the in-tank high-pressure pump) so I can delete the external pump and relocate the filter up closer to the tank where it's supposed to be? I can score a used pump, tank, and sending unit altogether for $25 locally, and if the swap would work, I would later on be able to just drop the tank, remove the high-pressure pump, and poke in the older low-pressure pump if/when I get around to converting to carb.
Anyone done this before? ... or does anyone know if the single high-pressure pump would work in place of the low-high two-pump setup?
Also, will the sending unit for a later-model ('86+) 5.0 hook right up or at least can be wired up to work with the '84? ... or will I be losing the functionality of my fuel level gauge?
