Fire wall holes question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jakeslim · 11-13-2004, 12:07 PM

my k5 has a stock heater setup(no air). Facing the firewall, there are two, appx 1" in diameter holes just above the heater unit. What would these be for?Air/heater unit? I thought the PO mentioned that truck had air at one time, but the dash is not an air dash. Would a dealer installed air not need a air dash?

thanks,
jakeslim

greasemonkey · 11-13-2004, 12:48 PM

My C/10 had a dealer installed underdash unit in it that I took out, and had a couple hoses running through above the heater box. A friend of my dad's welded them up for me.

jakeslim · 11-13-2004, 12:55 PM

Thats exactly where they are...hmmm....so I had dealer air? Be cool to put that back in. Need more info on this option though..

jakeslim

greasemonkey · 11-13-2004, 08:10 PM

I don't know if Blazers and trucks used the same system, but they probably did.
On mine, the passenger side kick panel vent door was removed, and the system was sealed to and drew air in through that opening. Mine wasn't hooked up, no compressor, just the two hoses running through the firewall from the unit to the condensor on the inner fender. The blower motor still worked when I took it off.
For heat, you just used the stock heater assembly.
I can get some pics for you tomorrow if you'd like, I have the whole thing stuffed in the back of my shed.

jakeslim · 11-13-2004, 09:23 PM

Pics would be great! I need to figure it all out.
Would you want to sell what parts you have?
let me know
thanks,
jakeslim

FRENCHBLUE72 · 11-13-2004, 09:46 PM

My 69 has those same hole's I just figured they were for air..

greasemonkey · 11-14-2004, 12:55 PM

Gotcha some pics finally. I didn't know it was buried that deep in the shed, lol. Note to self: don't wear flipflops in a disorganized shed where a spare tire carrier can fall from the top shelf on your toes.
The center vents are broken up, the seal to the kick panel vent is gone (PO used an old shirt to seal it up), and it is very dusty as you can see (New Mexico truck), but as far as I know it is mostly intact and last time it was in the truck the blower motor worked.

jakeslim · 11-14-2004, 12:58 PM

Would ya want to sell it? I'd be interested in iit? Let me know, I'll pm ya also

thanks for the pics, i owe ya one.

jakeslim

bouncytruck · 11-14-2004, 01:42 PM

My '69 has the same holes too but its not an A/C truck either? I've been passively looking for some plugs.

teamharvey · 11-19-2004, 11:44 PM

Here is the hole I have......

11-13-2004, 12:07 PM	#1
jakeslim Premium Level Member Join Date: Aug 2004 Location: Northern CA Posts: 829	Fire wall holes question my k5 has a stock heater setup(no air). Facing the firewall, there are two, appx 1" in diameter holes just above the heater unit. What would these be for?Air/heater unit? I thought the PO mentioned that truck had air at one time, but the dash is not an air dash. Would a dealer installed air not need a air dash? thanks, jakeslim

11-13-2004, 12:48 PM	#2
greasemonkey Registered User Join Date: Dec 2001 Location: Pace, FL Posts: 2,155	My C/10 had a dealer installed underdash unit in it that I took out, and had a couple hoses running through above the heater box. A friend of my dad's welded them up for me. Attached Images __________________ 1942 Master Deluxe 1969 C/10 1985 Blazer CUCV 1987 Jimmy 2004 Tahoe 2005 Silverado 1500 2005 Silverado 3500

11-13-2004, 08:10 PM	#4
greasemonkey Registered User Join Date: Dec 2001 Location: Pace, FL Posts: 2,155	I don't know if Blazers and trucks used the same system, but they probably did. On mine, the passenger side kick panel vent door was removed, and the system was sealed to and drew air in through that opening. Mine wasn't hooked up, no compressor, just the two hoses running through the firewall from the unit to the condensor on the inner fender. The blower motor still worked when I took it off. For heat, you just used the stock heater assembly. I can get some pics for you tomorrow if you'd like, I have the whole thing stuffed in the back of my shed. __________________ 1942 Master Deluxe 1969 C/10 1985 Blazer CUCV 1987 Jimmy 2004 Tahoe 2005 Silverado 1500 2005 Silverado 3500

11-13-2004, 09:46 PM	#6
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,606	My 69 has those same hole's I just figured they were for air.. __________________ GO BIG GREEN GO DUCKS MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P..

11-14-2004, 12:55 PM	#7
greasemonkey Registered User Join Date: Dec 2001 Location: Pace, FL Posts: 2,155	Gotcha some pics finally. I didn't know it was buried that deep in the shed, lol. Note to self: don't wear flipflops in a disorganized shed where a spare tire carrier can fall from the top shelf on your toes. The center vents are broken up, the seal to the kick panel vent is gone (PO used an old shirt to seal it up), and it is very dusty as you can see (New Mexico truck), but as far as I know it is mostly intact and last time it was in the truck the blower motor worked. Attached Images __________________ 1942 Master Deluxe 1969 C/10 1985 Blazer CUCV 1987 Jimmy 2004 Tahoe 2005 Silverado 1500 2005 Silverado 3500

11-13-2004, 12:55 PM	#3
jakeslim Premium Level Member Join Date: Aug 2004 Location: Northern CA Posts: 829	Thats exactly where they are...hmmm....so I had dealer air? Be cool to put that back in. Need more info on this option though.. jakeslim

11-13-2004, 09:23 PM	#5
jakeslim Premium Level Member Join Date: Aug 2004 Location: Northern CA Posts: 829	Pics would be great! I need to figure it all out. Would you want to sell what parts you have? let me know thanks, jakeslim

11-14-2004, 12:58 PM	#8
jakeslim Premium Level Member Join Date: Aug 2004 Location: Northern CA Posts: 829	Would ya want to sell it? I'd be interested in iit? Let me know, I'll pm ya also thanks for the pics, i owe ya one. jakeslim

11-14-2004, 01:42 PM	#9
bouncytruck SKINNY TIRES RULE! Join Date: Sep 2001 Location: Bothell, WA Posts: 11,038	My '69 has the same holes too but its not an A/C truck either? I've been passively looking for some plugs. __________________ bouncytruck 1972 K5 The Hauler 1994 K1500 Suburban The Daily2010 Kia Soul Wife's Ride2014 Fiat 500L

11-19-2004, 11:44 PM	#10
teamharvey Registered User Join Date: Jul 2004 Location: Turlock, Ca Posts: 578	Here is the hole I have...... Attached Images __________________ 71 Custom 20 Deluxe..soon to be SWB 1/2 ton 1 incredible wife 2 great kids

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