k as some of you guys may or may not know i doing the 4.3 to a V8 swap. i was looking at my fuel lines today on my truck and i saw that i have three? feed return and not quiet sure what the other one is coming up to my 4.3. now i was looking on my 5.3 fuel rails and only see the return and feed...am i missing something here? can and of you guys help me out here?!

-John

 

Feed, return and Evap.

2004 and later returnless will just have feed and evap.

 

hmmm...thanks man!

 

Return is a better setup. Swap some return style rails/intake, etc. onto the 5.3 if you are sticking with a stock intake.

Edit: Guess that means you would have to find an older intake as well.