[CamFrk68]

I rebuilt my hater box, added new seals, etc, but the ducting that looks like a Y (which is located under the dash appears short about 1/2 inch to meet the dash vent. Does the plastic shrink.

Also is there supposed to be an extension duct off the heater box to the floor for a non-AC car. I saw one on ebay and wanted to see if my car should have one.

Thanks, Ken

[click]

Ken, on my 69 there is a stub that has 'give' that slides up into the "Y" you are talking about. My stub has foam insulation around both ends and more or less slides up into the Y then settles back down 'a little' into the floor divertor. Thats where I taped it off to tighten the air flow a bit. If you are talking about the defrost vents, they too are about 1/2 inch short on mine as well. Not sure if thats the way they are supposed to be but most of the air moves up on that part. Hope that helps. Sorry I didnt take any pics of that area, but I can shoot some on Friday.


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[68rs406]

just did the same thing to my '68 last winter. i asked the same question about the seals at the dash area, on top of the "Y" (the defrost duct). the guy that sold the seal kit to me (yencoace, on this board) told me on 68 most didn't have the seals up there from the factory, there was no sign of any on mine, and i'm sure i was the first one there since assembly. so i just left them off, it all works excellent. on the bottom of the "y", it just sits over the heater box, nothing really to attach it to the heater box, all the holds it are the screws holding it to the firewall. i did however use one of the rectangular open seals that came in the seal kit around that area on mine, just seemed like there should be something. and finally, my heater box (the metal part) has a piece of plastic ducting screwed to the front of it, directing the floor air to the area over the pass. leg well. but, i have seen pretty original looking non console model camaros without this. mine has a console. although i have no idea for sure, but i figured the ducting was maybe used on the console models, so the heat wasn't just blowing into the console. just my fuzzy logic though. hope that helps

[JohnZ]

The gap between the defroster outlet on top of the heater box and the bottom of the defroster "Y"-duct is there by design; it's that way on purpose so blower motor noise and vibration from the heater box doesn't get transmitted to the "Y"-duct, which would then transmit it to the top dash panel, which would act like a "drum" and amplify the sound. All GM cars have that as a design standard. [img]graemlins/thumbsup.gif[/img]