[70 ElCamino]

Hello All, I am near ready to street my 70 Elky. The car was pretty much gutted when I got it. I am wondering what the original fuel system consisted of. The truck came with a brand new gas tank with a two line sending unit. Can I use this system or will I run into problems.

 

[70 ElCamino]

The large line would be main fuel line. What is the smaller one?

 

[CharlieB53]

Return from the manual fuel pump.

 

[70 ElCamino]

is this a proper set up for my 350 sbc. should I get a fuel pump with two lines fuel and return tubing, or get a fuel pick up with one line only. any help appreciated, just want to do it right.

 

[Shootstraight]

Seems they ran them both ways depending what engine and HP. The best I can find out is the high performance once had a return line. Mine was a 350 4 brl with no return line. Does yours have a splitter valve above the tank? If so you should be able eliminate the return line and just route the hose back to the tank.

 

[SamSnyder]

Return line? You sure you're not talking about the vapor line?

 

[Alan F]

Which hard lines do you have running along the frame rail?

 

[Robinls5]

I agree with Sam, 1970 Chevelles did not have a fuel return line it is a vent line and you do not have to use it. My SS 454 70 Sta. Wgn.
To make the engine look like an LS-5, I took a small piece of brake line ( 6" ) and soldered the end shut. Then hooked up the rubber vent line from the fuel pump and shoved the piece of brake line into the frame beside the fuel line and shazam ! It looks like a 1970 LS-5 fuel system.:yes:
Bob

 

[70 ElCamino]

the car was stripped and there are no lines
I will run a hard line for fuel and plug the vent tube from the tank
the fuel pump I have doesn't have a vent tube anyway
I presume use a vented gas cap
thank you for all the help you guys r awesome!