Fuel Tank and Rubber Lines Restore...

[pholliday1]

Glad to hear your making progress! Don't forget the checkbook when you go to fill the ole girl

[ehjorten]

     Erik, I do not have any pics since I did not have my I-pad when I tore apart my 77 K10, but I did write and draw everything I possibly could in my handy note book.  So I will see if I can answer your question while you wait on some pics.
     Standing in front of the truck, looking into engine bay, down on top of the charcoal canister, you should have 2 ports on the 77.
     The right port, went to the carb. to the bottom small hose & to the right of the big vacuum hose.
     The left port goes to frame by steering box, then the rubber hose is connected to a metal tube that goes across the front of the truck to the passenger side as you described, (except the part of connecting to the front pumkin), it went all the way to the passenger side and turned and maybe had about 6" or 8" of hard tubbing. 
     On my 77 K10, the metal tube ended on the passenger side and a rubber line went to vent the fuel tanks, not a hard line.
      Hope this helps, and sorry I did not have any pics for you.

Thanks Tom!

It looked like it was going over to the passengers side.  At least I could leave a long line out of the purge port and coil it up and secure it.  That way I don't have to drop the tanks again to get at the sending unit.  I wonder why Chevy just did the rubber lines instead of full hardlines back to the tanks?

[ehjorten]

Glad to hear your making progress! Don't forget the checkbook when you go to fill the ole girl

That will only be about $150 around here to fill up.  Chump change! 

[ehjorten]

So the driver's side tank is now installed.  I ran a 5/16" vapor line across the frame with the other 3/8" feed and 1/4" return.

What is weird though is that the 3/8" and 1/4" rubber lines were routed as stock with 4 OE clamps along the crossmember.  The clamps are sized to fit just the 3/8" and 1/4" lines.  There is not room for an additional 5/16" vapor line!  I wonder...how did they route that rubber line?!  The stock clamps over the frame rail are the same size and also will not accommodate an additional rubber line!

This truck is a pretty dang good example of a stock K20 too!