Fuel sending unit and return line
10-04-2017, 01:58 PM
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Fuel sending unit and return line I swapped my 350 cu in Chevy engine from my 1971 Impala Custom coupe replacing it with a used 2006 GTO LS2. I also had a custom made stainless steep fuel tank made by Rock Valley Antique. The submersible fuel pump has 2 lines, a PU (Pick Up and an RTN Return) the fuel rail on the engine only has one line (for the PU). Is there a return fitting on the engine or does the GTO LS2 have only one line?
The folks at Rock Valley told me that some engines don't have returns. I asked about another plastic plugged orifice, (1 & 1/2 inch diameter) and was told that it's for a fuel sending unit. Does the fuel pump include a sending unit? If not, where should I look for the correct sending unit? I understand I need to know the ohm for the CPU programmer.
The folks at Rock Valley told me that some engines don't have returns. I asked about another plastic plugged orifice, (1 & 1/2 inch diameter) and was told that it's for a fuel sending unit. Does the fuel pump include a sending unit? If not, where should I look for the correct sending unit? I understand I need to know the ohm for the CPU programmer.
10-04-2017, 02:57 PM
#2
The GTO does not have a return line but people use the EVAP line as the return with a regulator with the OE fuel tank: http://www.ls1gto.com/forums/showthread.php?t=560650
If you used the OE fuel pump bucket, it does have sending unit on it.
If you used the OE fuel pump bucket, it does have sending unit on it.
10-04-2017, 03:02 PM
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10-04-2017, 03:07 PM
#4