The first tube with insulation is connected to the choke and works as expected. Can someone tell me where the second tube (see green arrow) connects? It was not connected when I got the car and I see nothing in the vicinity to connect it to.
On my 351w the wrapped line goes into one side of the exhaust manifold and up to the choke. The other line goes into the other side of the exhaust manifold opposite the wrapped line and attaches to a vacuum source. I found this which shows how they attach.
Hot air gets pulled in through the choke by the carburetor vacuum, and that line gets the insulating wrap. The other line to the heater gets a metal tube inserted that connects to a vacuum hose. The vacuum hose is routed to inside the air cleaner through the carb plate that the air cleaner sits on. That line is nothing more than a source for filtered air that gets sucked through the choke heater and choke. Not sure why yours is pointed down at the front of the carb - it should point up at the rear of the carb.
Thanks again. I can see where it’s supposed to connect now through the carb top plate. Is there an easy way to pull out that tube and reset it? I don’t want to bend it.