I'm converting my old sending unit that used to read empty at half a tank to a high pressure in tank fuel pump. The old 5/16" supply will be the return and I added a 3/8" for the supply. I fixed the problem with the float switch and moved it up tube to clear room for the pump to be able to get this thing in the hole. I still need to rework the float arm by straightening it out and adding enough length to put it back where it used to rest. I bought an AEM 50-1000 pump, 25' of 3/8" hard line and some mounting clamps and incidentals for ~$120.
This probably isn't something anyone with a more common vehicle would want or need to do. And definitely not for the meek at heart. But for me, it's going to save me at least $300, buy me some time and leave me with a spare pump for the next tank. 64-70 Mustang tanks are VERY similar to van tanks. But you have to move the fill and vent from the old tank to the new and cover the old fill hole. I've been planning a 20 gal '69 swap when I went to efi. But an EFI tank with the pump and sender runs at least ~$325 from spectra up to ~$500+ from tanks,inc. Then pay to modify it which will cost as much as this whole deal. If you've got a mustang or something common Spectra will sell you this kind of sender apparatus w/a walbro pump for around $175, Holley has one for like $330 but holley's has no return line. Without baffles or Holley's magical 'Hydramat' it's less than ideal, but if it works this will buy me some time and make the swap easier. And the aem pump is stronger and quieter than either of the pumps offered by walbro or holley for the same $ or more. At least from what I've gathered looking into it. I found a Delphi FS0103 strainer for $13 shipped that looks like it will work well for this set up. I'm waiting on that to show up.
This probably isn't something anyone with a more common vehicle would want or need to do. And definitely not for the meek at heart. But for me, it's going to save me at least $300, buy me some time and leave me with a spare pump for the next tank. 64-70 Mustang tanks are VERY similar to van tanks. But you have to move the fill and vent from the old tank to the new and cover the old fill hole. I've been planning a 20 gal '69 swap when I went to efi. But an EFI tank with the pump and sender runs at least ~$325 from spectra up to ~$500+ from tanks,inc. Then pay to modify it which will cost as much as this whole deal. If you've got a mustang or something common Spectra will sell you this kind of sender apparatus w/a walbro pump for around $175, Holley has one for like $330 but holley's has no return line. Without baffles or Holley's magical 'Hydramat' it's less than ideal, but if it works this will buy me some time and make the swap easier. And the aem pump is stronger and quieter than either of the pumps offered by walbro or holley for the same $ or more. At least from what I've gathered looking into it. I found a Delphi FS0103 strainer for $13 shipped that looks like it will work well for this set up. I'm waiting on that to show up.
