I just replaced the heater core in my 64 with "all weather air", on top of the air dam box inside the car is a vacuum switch, apparently all this is for is to drop the pressure slightly when the heater dam door is closed so as not to freeze up the evaporator. So think it is not a big deal, but I am trying to figure out where both vacuum lines approx 3/8" dia go to, the small 1/4" line goes to the a/c valve, I would expect 1 of the 3/8 lines go to the intake but am not sure, is it possible both go to the intake?
any help is appreciated.
I have looked in both the workshop manual and assembly manual but I can't seem to find where they actually go.
many thanks
any help is appreciated.
I have looked in both the workshop manual and assembly manual but I can't seem to find where they actually go.
many thanks