Crown vic swap fuel system

FuelFire · Apr 2, 2019

So I'm putting a 98 Crown Vic engine and trans in a 77 F100. I've got most of this figured out but I'm not 100% on the fuel system. The easiest way that I can come up with is using a walbro inline kit - like this - that way I can retain the original F100 fuel tank, reuse the crown vic wiring, and just worry about running fuel line. It seems like it would be plug and play since the engine and tank is already set up for a return style system, all I'd be doing is using a different pump that is meant for this set up anyway. But I want to make sure I'm not overlooking anything.

Adieu · Apr 2, 2019

You have several different options on the pump, each with significant advantages and drawbacks.

The first option would be a frame-mounted pump like those used on 80s F150s and Rangers with EFI. Airtex has it under part number E2000, if I recall correctly. The advantage here is that you don't have to modify the fuel pickup on your truck, and that the pump can easily be serviced. The disadvantage is that fuel pumps prefer to push fuel rather than pull it by design, so pump life could be iffy if you can't find a good spot relatively low and close to the tank.

The next option would be a Crown Vic pump like you linked mounted in the tank. This would require modifying your truck's fuel pickup assembly and possibly the tank, to mount the pump. The advantage would be that the pump would run cooler and last longer.

The last option would be to go aftermarket.

FuelFire · Apr 2, 2019

74stang2togo said:
You have several different options on the pump, each with significant advantages and drawbacks.

The first option would be a frame-mounted pump like those used on 80s F150s and Rangers with EFI. Airtex has it under part number E2000, if I recall correctly. The advantage here is that you don't have to modify the fuel pickup on your truck, and that the pump can easily be serviced. The disadvantage is that fuel pumps prefer to push fuel rather than pull it by design, so pump life could be iffy if you can't find a good spot relatively low and close to the tank.

The next option would be a Crown Vic pump like you linked mounted in the tank. This would require modifying your truck's fuel pickup assembly and possibly the tank, to mount the pump. The advantage would be that the pump would run cooler and last longer.

The last option would be to go aftermarket.

Ahh, I thought I had found an inline pump marketed for a crown vic. It's actually meant to replace the in-tank pump. I was trying to find something like what you talked about in your first option so that I don't have to modify my tank. The only thing I'm iffy about is the wiring and how to get it to work with the stock computer.
Am I right in assuming that with the return style the computer basically just turns the pump on and off?

Adieu · Apr 3, 2019

FuelFire said:
Ahh, I thought I had found an inline pump marketed for a crown vic. It's actually meant to replace the in-tank pump. I was trying to find something like what you talked about in your first option so that I don't have to modify my tank. The only thing I'm iffy about is the wiring and how to get it to work with the stock computer.
Am I right in assuming that with the return style the computer basically just turns the pump on and off?

Pretty much.

Crown vic swap fuel system

FuelFire

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Adieu

Easy there, this ain't a dating site.

FuelFire

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Adieu

Easy there, this ain't a dating site.

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Crown vic swap fuel system

FuelFire

New Member

Adieu

Easy there, this ain't a dating site.

FuelFire

New Member

Adieu

Easy there, this ain't a dating site.

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