I was discussing the issue of a return fuel line with a buddy who is rebuilding a 67 Firebird, and we had some questions.
My 68 FB was originally a 350 car w/o A/C, and I believe a California car. It came with a return fuel line. I have since replaced the fuel system and added a 400 motor. The new fuel system does not have a return fuel line. Should the gas cap be vented or non-vented? Which cars came with vented or non-vented gas caps. Were these dependent on whether car had or did not have a return fuel line?
Will not having a return fuel line cause problems?