This might sound like a dumb question to some of you, but what's the easiest way to determine exactly what size/diameter my existing fuel lines are? They are originals for an '83 Z28 HO car for those that might have service manauls.

I'm assuming it's most likely the same for LG4's of that era. I'm just guessing them to be 3/8" supply and 5/16" return?? NE1 know for sure, or is there an easy way to find out without a shop manual?

Just want to make sure I get the right size/fittings to adapt to the existing lines I have....

 

That's what it is. Although the return line is only 5/15" at the hose end.

 

I thought that's what they might be...I used to know a long time ago..lol
-Thx Apeiron!

 

In all the time I've been on TGO, I've never seen anyone challenge the statement that all 3rd gens (including V6's) had 3/8" supply and 5/16" return lines.

 

L4s have a 1/4" line.

 

You see, that's why it's so hard to consider L4's as "real" 3rd gens...

 

Allright you guys, you're having way too much fun with this.......