Fuel lines for 5.3 swap

Markt361

Markt361

n00b
Jul 16, 2018
2
1
So kinda confused. I’m using my stock carbureted gas tank on my 1980 cutlass supreme V6 230ci to convert to efi with 5.3. I see on the gas tank that their is only a send and return line. I purchased the spectra fg156a fuel sending unit it has a send, return, and vent. So where do I connect the vent line too?
 

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