Glassbowtie77

I have the dash out of my car to replace all of the heater and A/C vacuum hoses, replace the headlight switch, and replace all the bulbs while I'm at it. While taking the duct work out I noticed that the bottom of the defroster duct has a open space between it and the main duct for the heating system. This doesn't look right to me, I think it should be connected and I think it explains why hardly any air blows out of the defroster vent. Does anyone have a picture of this so that I can see if anything is missing. You can see what I'm talking about in the photo below. Thanks.

Aggitated Monkey

I don't think your missing anythig. I believe that gap is just sealed. My '80 had a gap and I just sealed it with duct tap.

I'm Batman

As far as I know, that gap was left open by the factory. Sealing it with tape won't hurt anything.

Chuck-75

Im doing my 75 dash and I had the same question?, why dosent this fit?. so I added some alumenium dock tape and seeled it up tight.
just glad to know that Im not the only one that has ran into this problem/question.

SIXFOOTER

Factory never did figure that one out, had the same on my 77 and 81

Durango_Boy

Yep, my '77 as well. I still have the remnants of the factory duct tape on mine...just wrap it with new duct tape and go have a beer.

Aggitated Monkey

Some time we all just need a little Bubba

Belgian1979vette

Same here

dobroman2001

My '76 was exactly the same. I used some plastic, screws and duct tape and fabricated something that would close that space up!

Ray Y

My '70 is the same way too.

FB007

I know of no factory duct tape there. Are you sure?

Durango_Boy

Yes. The factory had a duct tape of sorts wrapped around the gap in the duct.