[gfrasurelauth]

So I am swapping a 2nd gen 12v cummins engine into a 1980 c20 squarebody that had a 350 sbc and was wondering on how I should do the fuel system to retain stock features such as the 2 tanks and gages. Would I be able to do some modifications to the stock sending units such as removing the sock on the bottom of the unit and removing any gas filters and running them into the lift pump, would that be a viable option? Any ideas or input would be appreciated

 

[9297oldram]

I moved this to the 12v Conversion Build Threads With Shop Talk .

I did a 12v swap in a K5 Blazer and used the stock fuel tank with no modifications. Dual tanks would be a different problem because you need a return fuel line for each tank. You could always get a Blazer fuel tank which is 32 or 34 gallons and it would make it simpler.

 

[u2slow]

The later years of tank switch have return lines. 87 is tbi and has it. I think there's a Dorman replacement.

 

[gfrasurelauth]

I moved this to the 12v Conversion Build Threads With Shop Talk .

I did a 12v swap in a K5 Blazer and used the stock fuel tank with no modifications. Dual tanks would be a different problem because you need a return fuel line for each tank. You could always get a Blazer fuel tank which is 32 or 34 gallons and it would make it simpler.

So you just ran the lines from the sending unit straight to the lift pump on the 12v?

 

[9297oldram]

So you just ran the lines from the sending unit straight to the lift pump on the 12v?

Yes and I used this inline filter to help keep the trash out of the LP, you can put it anywhere it's easy to get to. And you'll have a return line from the injectors that will need to go back to the sender. Supply is 3/8 and return is 5/16.

Wix 33270