Fuel Line - Schmuel Line

[wxman1]

I've had my 69 C-10 P/U for about 2 years
now. I have replaced most of the guages with autometer stuff. However the fuel guage
does not indicate correctly. With the fuel
guage on "E", it registers 1/2 tank if I put in
5 gallons. Way off. OK...so at the Louisville
Swap Meet last weekend I bought a new
fuel sender. Go to install it and the old fuel
line is smaller and doesn't fit the fitting on the new fuel sender. The current fuel line is a 5/16. After trying a couple of larger sizes on the sending unit coupler, it appears to fit a 3/8 fuel line.

So here's my question. Anybody out there
got a bone stock 69 C-10 P/U with a 350
V8 ? If so what size fuel line do you have in
you truck? Also how many sections of hard
line do you have and how many sections of
rubber line?

I tried looking in my 69 C-10 Service
Manual and also the LMC catalog. Can't
find anything that states the size of the
fuel line.

Jim
Mt Juliet