66 heater box with a/c - Vintage Mustang Forums

 
Thread Tools
post #1 of 9 (permalink) Old 11-17-2012, 08:52 AM Thread Starter
Member
 
Join Date: Jun 2012
Posts: 88
66 heater box with a/c

I thought the factory underdash a/c unit was independent of the heating/vent system...why is there a different heater box for factor a/c cars?
socalrs is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 11-17-2012, 09:27 AM
Senior Member
 
yelostang's Avatar
 
Join Date: Aug 2000
Location: South Florida
Posts: 10,413
Didn't think there was a difference. Have seen two Fl. Mustangs with heater delete AND
the underdash AC.
yelostang is offline  
post #3 of 9 (permalink) Old 11-17-2012, 09:28 AM Thread Starter
Member
 
Join Date: Jun 2012
Posts: 88
already discussed and answered

Sorry....realized this was previously discussed on a post and it appears the consensus was for 66 the heater box was the same.
socalrs is offline  
post #4 of 9 (permalink) Old 11-17-2012, 09:35 AM
Senior Member
 
65fastback6's Avatar
 
Join Date: Aug 2002
Location: Cincinnati, Ohio
Posts: 4,912
64-66 used the same heater box, A/C or non A/C cars.

In 67 when they went to integral A/C the heater was
part of the A/C box, if a 67-68 didn't have factory A/C
then a heater box very similar to 64-66 was used.


65 Fastback 2+2 Rangoon red, red interior
6 cyl, AT, A/C, P.S., P.B.

MCA# 00945

Previously owned Mustangs:
6F07C,5F07T,5F09A,6F08A,
5F07C,3F03F,1F03H,3F03H,
1F04F,3F01L,8F03Y,9F03W,
84 SVO,86 SVO
65fastback6 is offline  
post #5 of 9 (permalink) Old 11-17-2012, 09:49 AM
Senior Member
 
22GT's Avatar
 
Join Date: Jun 2009
Location: Southeastern Pennsylvania
Posts: 29,447
Correct. The 64-66 heater was identical whether the car had AC or not. Oddly, this means you could operate both at the same time. I tried it one time on a miserable cold rainy day, to clear mist on the side windows. The AC stared pumping out fog!

Amateur restorer. Well, sometimes I have been paid for it. But not right now.
22GT is offline  
post #6 of 9 (permalink) Old 11-17-2012, 02:18 PM
Senior Member
 
Join Date: Mar 2001
Location: San Diego, CA
Posts: 3,075
Quote:
Originally Posted by 22GT View Post
Correct. The 64-66 heater was identical whether the car had AC or not. Oddly, this means you could operate both at the same time. I tried it one time on a miserable cold rainy day, to clear mist on the side windows. The AC stared pumping out fog!
Putting the AC on very cold would wring moisture out of the air and drain it out the condensate tube. The heater would have to be operated in the recirculation mode with the large door on the right open and the control set to not bring in outside air. In a short time, the humidity in the cab should drop dramatically. If you brought in outside air on a rainy day, you would be fighting a losing battle and maybe that is why you saw fog.

SWMBO's '66 Coupe 289, 2-V, C-4(Pony Interior, Rally Pac, A/C & Tiffany Stripe) & An absolutely rust free '65 289-2V C-4 coupe project. Now almost done. Only took 13+ years.
Gas_Pumps is offline  
post #7 of 9 (permalink) Old 11-17-2012, 03:00 PM
Member
 
Join Date: Jun 2012
Posts: 74
Quote:
Originally Posted by 65fastback6 View Post
64-66 used the same heater box, A/C or non A/C cars.

In 67 when they went to integral A/C the heater was
part of the A/C box, if a 67-68 didn't have factory A/C
then a heater box very similar to 64-66 was used.

I just had the problem of finding a 67-68 box
silversol is offline  
post #8 of 9 (permalink) Old 11-17-2012, 06:01 PM
Senior Member
 
22GT's Avatar
 
Join Date: Jun 2009
Location: Southeastern Pennsylvania
Posts: 29,447
Quote:
Originally Posted by silversol View Post
I just had the problem of finding a 67-68 box
Used heaters are getting scarce. Last time I was at Glazier/Nolan, a guy came in looking for one. Of course, you can always get a new one. The few junk heaters turning up these days are a pretty sorry bunch.

Amateur restorer. Well, sometimes I have been paid for it. But not right now.
22GT is offline  
post #9 of 9 (permalink) Old 11-18-2012, 09:37 AM
Senior Member
 
Mustangerbob1's Avatar
 
Join Date: Jul 2000
Location: Texas
Posts: 5,669
The 1964 1/2 1965 boxes are different from the 1966 boxes. The earlier ones had a 3 wire heater motor, and no resistor on the front of the box. The 66 had the 2 wire motor and the resistor on the front of the box. The 67 68 also had the 2 wire and the resistor, but the heater door opens and closes up and down instead of left and right.

The back of the heater box (goes against the firewall) is the same for all 4 years, except the the 67 68 with AC, which is totally different.

Ford apparently had different suppliers for the heater boxes, as the front and back fiberglass clamshells have different recesses to attach the clips to hold the box together. The recesses have about 3/4" differenences at times.

This spring, at the Pate swap meet, I bought a total of 15 heater boxes from various sellers. Between broken fiberglass, rust, other damage, about 4 went in the trash. The rest I cleaned up, and my son sold most of them for fund raising for his Eagle Scout Project.

One guy tossed in FOR FREE 3 67 68 indash air units, in various conditions. After 3 tries on ebay, no interest, they were taken apart, the cores removed and sold for scrap, and the shells went in the trash. Kept the blower motors, as they all worked.

There is also some heater hoxes that are the same, or similar, on Comets, Falcon, Fairlanes, etc.

RHen1514@aol.com ed ay +3112

Richardson TX

1968 GT500 Arrest Me Red (The Big Boy Toy)
1966 K Code Vert (The K 'Vert)
Mustangerbob1 is online now  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Vintage Mustang Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome