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Post Info TOPIC: 70-72 Heater and AC box-engine side of firewall
bowtie


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70-72 Heater and AC box-engine side of firewall
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On the 70-72, are the heater core tubes that come out of the firewall moved for the AC cars vs the heat-only cars? I'm looking to remove the AC firewall stuff (engine side) from my car. I thought learned that the heater cores came out in different places, if that's true then I can't use a regular heater/blower motor case. I want to keep the heater so I can't just use one of the block off plates that's totally flat.



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Bryan-NW 'burbs
1972 Malibu
Vaguely stock appearing, and the opposite of restored.
1999 std bore 5.7, Vortec heads, Holley Stealth Ram, GM cam
700R4, Viking coilovers, 12 bolt 4.10 posi, and a whole bunch more
SteveS


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What about something like this?

http://www.opgi.com/chevelle/1972/cooling-heating/heaters/CH27810/



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Steve S. - Fountain, MN

 

1972 Chevelle - 383 stroked LS1/4L60E - SOLD!
Lost in the 60s


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We should be able to fabricate an adaptor plate to mount the standard heater on the firewall while blocking the A/C opening. My GTO is sitting here with a bare firewall and the heater box is on the shelf for reference. Once you pull your A/C system off, you can get a dimension for the overall size of the plate.

I just remembered I have a '70-72 A/C box sitting on another shelf. I could trace that on a sheet of steel and cut to size and drill for original mounting studs and standard heater box.



-- Edited by Lost in the 60s on Monday 9th of December 2013 05:08:50 PM

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Mitch D.   River Falls, WI

Lifetime member of the "Cars apart Club"

1966 Chevelle SS 396 M20

1970 Chevelle SS 396 M20

1967 Camaro SS/RS 350 M20
bowtie


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thanks guys. I think I prefer the molded box, only for the factory look. I did think of making something along the lines of what you're describing Mitch, but I think it will look a little too out of place for what I have in mind.

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Bryan-NW 'burbs
1972 Malibu
Vaguely stock appearing, and the opposite of restored.
1999 std bore 5.7, Vortec heads, Holley Stealth Ram, GM cam
700R4, Viking coilovers, 12 bolt 4.10 posi, and a whole bunch more
Derek69SS


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A flat plate wouldn't work, because there's no "duct" for the fan to blow air through the heater core.

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Derek Kiefer - Mantorville, MN

69 Malibu Pro-Touring stroker LS1-383/T56 - 69 SS396-325/3spd project
bowtie


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Yup, that's what I want to stay away from. I had thought about folding up a simple \__/ tunnel and mating it to a blower motor base, but in the end it will take way more than I want to do to make it look nice.

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Bryan-NW 'burbs
1972 Malibu
Vaguely stock appearing, and the opposite of restored.
1999 std bore 5.7, Vortec heads, Holley Stealth Ram, GM cam
700R4, Viking coilovers, 12 bolt 4.10 posi, and a whole bunch more
SteveS


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The link I posted says they are plastic or fiberglass depending on application, but it doesn't say which the Chevelle one is made from.  It would allow you to keep your heater.



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Steve S. - Fountain, MN

 

1972 Chevelle - 383 stroked LS1/4L60E - SOLD!
Tony Hoffer


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I forgot who the vendor was it was 14 years ago.. But I have the fiberglass replacement cover on my 72.. worked great

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You can sleep in your car, But you cant drive your house
bowtie


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Probably American Graffiti?

Do you have a picture as installed Tony?

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Bryan-NW 'burbs
1972 Malibu
Vaguely stock appearing, and the opposite of restored.
1999 std bore 5.7, Vortec heads, Holley Stealth Ram, GM cam
700R4, Viking coilovers, 12 bolt 4.10 posi, and a whole bunch more
Tony Hoffer


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I just saw this Bryan so I went out and snapped a couple of pictures..









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You can sleep in your car, But you cant drive your house
bowtie


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Thanks, that's going to be my first winter project.

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Bryan-NW 'burbs
1972 Malibu
Vaguely stock appearing, and the opposite of restored.
1999 std bore 5.7, Vortec heads, Holley Stealth Ram, GM cam
700R4, Viking coilovers, 12 bolt 4.10 posi, and a whole bunch more
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