i'm at the point where i have most of everything to toss this engine into my fiero. The issue now is fueling. the LZ9 is a returnless system, and of course the fiero is a return system.
Question 1 ) Is there a stock GM fuel rail that fits the 3500 that has a return on it? e.g., something from a 3100 or 3400? Question 2 ) the LS swap trick with a C5 filter/regulator combo - it makes the returnless system a return system... but i cannot find the GM female to barb connections.. the female ones i found are 800-120 and 800-121... but i cannot find any that have the male quick disconnect end to a barb.
If anything i think 1 would work, but i have no idea on the words i'd need to search to find what i need
jelly2m8
SEP 06, 12:16 AM
Option 2 is the easiest and most preferred way to deal with a return less fuel system. The fitting you want is easily found at any parts stores. Option 1 probably does not exist.
[This message has been edited by jelly2m8 (edited 09-06-2025).]
