Fuel lines for 5.3 swap



Jul 16, 2018
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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