Does the 69 FB have a Fuel Vapor Return Line? I'm trying to figure out which fuel pump to buy and this was an option? Thanks.

As a general rule, the cars that had a four barrel carb have the return line.
Jim

I beleive that if they had a/c they also had one. My 350/2 barrel had one.

Unfortunately i don't know too much of the history of the car. Only that it had a SBC in it previously that had a 4 barrel holley on it. Is there any way I can look at the fuel tank or lines in the compartment to check for sure?

Yes, just take a look at the lines. You will see two coming out of the tank running side by side all the way to the pump location. The smaller of the two is the vapor return.
Jim

My 350/2 w/AC also had the vapor line.

Not to jump topics, but has anyone found a good place to get a replacement fuel sending unit for a '69 with the vapor line setup?

I noticed that one of the fuel lines in the engine compartment has been plugged up with a bolt. I'm assuming this is the vapor return line from the tank. Is this supposed to connect back to the pump or carb? And since it was plugged up with the last motor on there, is the vapor return line absolutely necessary for the motor to run right?

The fuel vapor line is not absolutely necessary but since you are replacing your pump, it would be a good time to get it right. The fuel vapor return does several things including letting trapped fuel vapor return to tank. Also, it helps keep your fuel cool by keeping it circulating.

The line connects to the pump.

When you go to the auto parts to buy the pump tell them you have a 69 Firebird with a 400 4 barrel and they should give you the right pump. If it doesn't have the extra connection for the vapor line get them to look further or go to a different parts store.

Jim

Try Frank's Pontiac Parts in California, he has new replacements available now.

Steve

My 69 350 2/bbl didn't have a return line. Since my car isn't stock any longer, I replaced my fuel pump with a higher performance Carter pump which doesn't have a return line either.

9's come both ways. As pointed out, it could be the 350/400 and/or w/w/o ac. I don't know. I do know that you could get 350 cars converted to 400 cars by new car make ready. Whether or not they went to the point of adding return lines on such conversions is a good question.

I'm not positive but I think that CA emission packages required the return line, meaning that a 350 2/bbl car w/o ac may have a return line.