68 only fuel tanks

[Tommy]

I pulled my tank today because while it sat it developed A pin hole and leaked about 10 gallons of 115 octane onto the garage floor (not while I was welding pans LOL). Anyway, being A 68 it only has one line coming out of the tank and its on top but I didn't realize it's A 5/16 line . It goes to the end of the pass side of the tank then is joined by A short rubber fuel line (maybe3 inches) then the rest of the fuel line is 3/8 up to the fuel pump on the block. I kinda figured the line would be 3/8 from the tank to the pump . The other thing is the tank had A ton of little lead like bb's in it, could they be part of the tank thats coming apart or maybe part of the sending unit?

Tommy

[Maxturbo]

BB's?

Sounds like someboby introduced some foreign objects.

Nothing inside the tank would become dislodged and do that, to my knowledge.

The fuel line comes off the sending unit which is transfered to the new tank, right?

68 & 69 tanks are the same according to...
http://1962-79chevynovaparts.com/cat...004%20fuel.pdf

e-bay has some good tank deals for 3RD Gens.
http://cgi.ebay.com/ebaymotors/GAS-F...52002050QQrdZ1

[Tommy]

68 & 69 tanks are the same according to...
http://1962-79chevynovaparts.com/cat...004%20fuel.pdf

My mistake, I thought I remembered the 69 Novas having the return line.

Tommy

[Maxturbo]

I think you're correct on the 69' tank (w/the HiPo 350 or BB) applications and the return line, but even those w/the return line, tie into the sending unit I believe.

[Tommy]

The fuel line comes off the sending unit which is transfered to the new tank, right?

The line comes directly out of the top of the sending unit and makes A immediate bend to the pass side before being mated with A large 3/8 line.

Tommy

[Tommy]

The wet area around the sending unit is Pb Blaster not A fuel leak. The tank has A pin hole underneath.

Tommy

[taz3]

I'm almost positive my 69 L78 is 3/8 from tank and it looks identical to what you have.GM still sells L78 sending unit part no. should be 6428845 the line and unit should be one unit.

[WILMASBOYL78]

Taz is correct..3/8 from the sender to the carb.

wilma

[MNYenko]

I pulled some fuel line clips from a 68 6cyl parts car. They were for a 5/16 inch fuel line. My 69 V-8 used 3/8 inch. You can get the sending unit repop with 3/8 line. The return line style is not reproduced. The GM part is no longer available. Earl

[BillsNogo]

Originally Posted by MNYenko

I pulled some fuel line clips from a 68 6cyl parts car. They were for a 5/16 inch fuel line. My 69 V-8 used 3/8 inch. You can get the sending unit repop with 3/8 line. The return line style is not reproduced. The GM part is no longer available. Earl

I am looking in the assembly manuel for a 69 and can not find the diagram that list the part numbers for the fuel lines, or showing where the return fuel line connects to. Does it come from the fuel pump, or carb?

[taz3]

Both of my 69's don't have return line one BB & one SB but are 3/8 lines in both cars.Pretty sure no 69 have return lines but I'm not 100%.

[Joe]

69 SS 350 has the Return Line.It is on my Wifes Car.They are avalible.It has a 3/8 Fuel Line and the Return Plumbs into the Fuel Filter.
My BB Cars 69 and 70 Have 3/8 with no Return.
Up to 72 SB Cars (SS) have the Return.
Joe

[Joe]

Taz,
Just Read your post and dont want to sound like I Disagree with you,Maybe some do and Some dont?Is the Sb a SS Car?
Joe

[Maxturbo]

The 69' sending unit is avail w/the 3/8" line, along with fuel return lines as shown here...
http://1962-79chevynovaparts.com/cat...004%20fuel.pdf
Used on the 350/4barrel and BB aplications.

The 4 banger up to the 2 barrel 350 used the 5/16" line and no return line.

[Tommy]

Interesting, all my lines look very original and factory. I noticed the ground wire that attaches the sending unit to the bottom of the car had been cut and retaped (you can see the tape on the wire in the pic I posted)so I suppose it is possible the tank may have been replaced sometime...

Tommy