hello I’m currently performing a sacreligious swap on my 59 fiesta wagon. I’m swapping an ls drivetrain and was wondering if anyone knew of any easy swap parts that fit a factory fuel tank to convert it to fuel injection. I.e. a sending unit or fuel pump that will fit in the factory tank and allow me to run new lines. Any info is greatly appreciated.

 

You might check with Holley's line of in-tank EFI pumps and sender units that might fit your factory tank. You might have to run a return line, but that is probably simple compared to finding a new tank for your classic wagon.

Any deets you are willing to share on your swap to help hone in on a more optimum solution for you? This post reeks of a LS swap, not that that it is entirely bad (and understandable).

 

Don't forget to check out Summit Racing and Jegs. I think there are off-the-shelf parts that do exactly what you need.

 

No need for apologies on the LS swap. Eminently practical solution in 2026. It will be great for us to learn from your experiences too.

I’m a carb guy, but from what little I know, if you’re going to go EFI, you’ll need to run a return line.

Guessing the fuel tank will be a thoroughly custom job. In ‘59, fuel injection was for Messerschmitt fighters and Corvettes.

Good luck!
Chris

 

My fuel tank is vertical, so there are no electric pumps that will fit this configuration. I believe your tank is horizontal, so it is possible to adapt something.

But you asked for an easy way. That's not it.

I bought a small reservoir tank (RobbMC PS550) that mounted behind the right headlights. The car's mechanical fuel pump fills it. It contains a standard, submerged electric pump. From there I put in a bypass regulator and a return line to the tank.

This would be an easy way to get the 60 psi or so that you need.

Nice project. Keep us informed.

 

Gary,
Many thanks for the idea on the reservoir tank in the engine compartment. I’m a qjet guy so it’s irrelevant to me, but friend to hear about the modification/adaptation.

Do you run your car with such a reservoir tank today? Has it worked well/safely/long?

Just curious
Chris

 

Chris, it's been everything the ad copy promised. No problems have come up. RobbMc is an upstanding supplier!