Just put a 350 in a 87 z28 iroc what do i do with the existing fuel lines this is a carb. car what do i need to do an buy. Thanks Larry.

 

Simple- cut the fuel lines near the frame of the car and run some new braided fuel lines to the carb.

 

What was the car originally? TPI or carb?

If it was TPI and your changing to carb, you'll need a return style fuel pressure regulator like the Mallory 4309, and about 8 ft of fuel injection rubber hose (4ft of 3/8 id and 4ft of 5/16 id), and a few brass fittings from local hardware store with 3/8 barbs and 5/16 barbs for the hose.

If it was a carbed ccar before - just use the stock lines and hook up the new carb.

 

It was tpi an now going to carb. I didn't know what to do with the old lines I think there was 3 lines. Thank You Larry.

 

In not sure about 3 lines as mine had only 2.
there was a big one which came from the gas tank to the fuel pump, and the other was an excess gas return line. Then from the fuel pump there was a line that ran to the carb. Does your 350 have electric pump or manual. I have manual, so it was pretty easy as the lines matched up where they were going.

 

Mike Its been 20 years an I dont remember I tkink there is 1 small line an 2 big lines with screw on fittings they are on the dr. side. the fuel pump is gone so do i need a new fuel pump.Sorry about all the questions Thanks Larry

 

The fuel lines - there are 3 as you say on your car - one is the feed line, and it's 3/8, one is the return line, and it's 5/16, the third line runs to the charcoal canister - the end of it is the farthest one towards the front of the car.

If using another in-tank pump, you'll need the fuel pressure regulator (a return style like the Mallory 4309) on the feed line between the fender and the carb.

If using an external pump, you have to drop the gas tank anyway to remove the dead intank pump. At that point, you can install a carbed pickup and attach to the feed line running to the front of the car. Then you can choose between an electric external carb pump (mounted close to the gas tank), or a mechanical pump on the block.

Bottom line is, you'll have to drop the tank regardless (unless you cut through the rear hatch floor and make an access panel. I prefer dropping the tank.