Re: Fuel line BB vs SB
6703 is the supply line from tank to pump.
6704 is the return line from filter to tank.
But, I believe '67 came with two line diameters, 5/16 for L6, & 3/8 for V8's, but no return line.
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Last edited by Everett#2390; Dec 16th, 16 at 05:12 AM.