1985 scotsdale stepside duel fuel tank

[jenerek]

Hey Folks, First post and new to the square body world
We bought a 1985 scottsdale 2wd stepside on the weekend to have as a project truck. I need to replace both fuel cells on it but cant seem to find the part numbers or where to order them. Any Help here would be amazing. look forward to scrolling through and reading what you folks have been maintaining

 

[75gmck25]

Stock fuel tanks were the same left and right for for all carbureted squarebody trucks (EFI trucks got a baffled tank). LMC truck, RockAuto and many other places sell them. I assume you have 16 gallon tanks on a step side, since there isn’t enough space for the 20 gallon tanks.
https://www.lmctruck.com/fuel-system/gas-tanks-parts/cc-1973-87-side-mount-gas-tank-and-components

Sending units are different left to right, and may have 1, 2, or 3 ports. Your ‘85 truck probably has a 3 port sending unit, with fuel feed, fuel return, and vent line connections.

Vent lines connection to each other with a T, and then a single metal vent line runs up to the charcoal canister under the hood.
Fuel feed and fuel return lines for each tank connect to a 6 port switching solenoid under the truck, then a single feed and single return line runs from the solenoid to the engine compartment, and the solenoid is switched by a dash switch.

 

[Strick]

Welcome to the site from NC.

HS

 

[jenerek]

amazing help, thank you so much, I will measure the tank soon to figure out its capacity

 

[CheemsK1500]

Welcome. Rock auto is where I ordered my tanks, together they cost a little less than $200 shipped at the time. Also check and see if your tank valve and selector switch work. If they don’t, now would be a good time to diagnose and repair them. The same goes for your fuel guage.

 

[jenerek]

I will be replacing both tanks, sending units, lines and tank selector while I have them off