Heater Box seal installation - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dlisabeth · 09-17-2010, 12:53 AM

This feels like a stupid question but it has me stumped!

I am working on re assembling my heater box in preperation for paint and have run across an issue. I purchased a 6-piece seal kit from Classic Industries but can only figure out how to use 2 of the seals. The previous owner had used silicone sealant so I did not remove any seals during disassembly which I could use as a guide. Below is a photo of my heater box along with a photo of the 4 seals which I cannot figure out. The other photo is of the 2 seals that are obviously installed at the heater box and firewall connections. Can someone please provide me with some insight as to which seals go where?

Also is there supposed to be a seal between the fan and heater box?

Thanks,

Derek

**Captainfab** · 09-17-2010, 01:09 AM

I can't help you with those 4 seals. They don't look like anything I've seen on these trucks in over 30 years of working on them. As for a seal between the fan and the heater box. I've seen some with a butyl type of caulking on them and some without anything. I'm not sure what was done at the factory. I would say that some sort of seal wouldn't hurt.

dlisabeth · 09-17-2010, 01:38 AM

Quote:

Originally Posted by Captainfab

I can't help you with those 4 seals. They don't look like anything I've seen on these trucks in over 30 years of working on them. As for a seal between the fan and the heater box. I've seen some with a butyl type of caulking on them and some without anything. I'm not sure what was done at the factory. I would say that some sort of seal wouldn't hurt.

I am glad I am not alone. :-)

Here is a page out of LMC's catalog that shows the same kit.

If you haven't used these seals, what have you used and in what areas of the box?

dlisabeth · 09-17-2010, 05:51 PM

Does anyone have anymore info on this? Has anyone else bought this seal kit?

**Captainfab** · 09-18-2010, 12:39 AM

I've not bought the seal kit. If I needed a new seal, I've just made my own, and just the two you already figured out.

Quote:

Originally Posted by dlisabeth

I am glad I am not alone. :-)

Here is a page out of LMC's catalog that shows the same kit.

If you haven't used these seals, what have you used and in what areas of the box?

tapeworm · 09-18-2010, 02:14 PM

I'm glad I bought that kit as well.

And I was thinking, "wow, what a complete kit"

09-17-2010, 12:53 AM	#1
dlisabeth Registered User Join Date: Oct 2009 Location: Howell, Michigan Posts: 102	Heater Box seal installation This feels like a stupid question but it has me stumped! I am working on re assembling my heater box in preperation for paint and have run across an issue. I purchased a 6-piece seal kit from Classic Industries but can only figure out how to use 2 of the seals. The previous owner had used silicone sealant so I did not remove any seals during disassembly which I could use as a guide. Below is a photo of my heater box along with a photo of the 4 seals which I cannot figure out. The other photo is of the 2 seals that are obviously installed at the heater box and firewall connections. Can someone please provide me with some insight as to which seals go where? Also is there supposed to be a seal between the fan and heater box? Thanks, Derek Attached Images __________________ 1965 Shortbed stepside Chevrolet C-10 My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=409676

09-17-2010, 01:09 AM	#2
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: Heater Box seal installation I can't help you with those 4 seals. They don't look like anything I've seen on these trucks in over 30 years of working on them. As for a seal between the fan and the heater box. I've seen some with a butyl type of caulking on them and some without anything. I'm not sure what was done at the factory. I would say that some sort of seal wouldn't hurt. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

09-17-2010, 05:51 PM	#4
dlisabeth Registered User Join Date: Oct 2009 Location: Howell, Michigan Posts: 102	Re: Heater Box seal installation Does anyone have anymore info on this? Has anyone else bought this seal kit? __________________ 1965 Shortbed stepside Chevrolet C-10 My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=409676

09-18-2010, 02:14 PM	#6
tapeworm fan of "Butters" Stotch Join Date: Dec 2009 Location: St. Paul, MN Posts: 267	Re: Heater Box seal installation I'm glad I bought that kit as well. And I was thinking, "wow, what a complete kit" __________________ 64 shortbox fleetside replacing rusty junk with more junk, and one day to become a real truck again



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