Experience needed on heater box swap.

[BrandonDindorf]

I have a 73 with factory AC. I am switching to a standard heater box. I now have a complete Non AC factory heater box and duct work. The cowl has been fully replaced with a non AC version. The car is completely stripped down (dash and all) and ready for reinstall. It appears the AC vs non AC firewalls are different. I noticed by test fitting it looks like I need to cut a hole for the blower motor to fit. Is this right? And what protects the motor from the elements in the fender well?

Any help or pictures would be wonderful.

-Brandon

 

[BrandonDindorf]

Anyone have a stang with non AC they could take a picture of some locations?

 

[tempestairbrush]

Here is a link to my build, the donor parts car was factory AC (maron mustang) the white car being built up is a factory non A/C car.

mustangs striped down

Anyone have a stang with non AC they could take a picture of some locations?

It looks like from the pictures i have the only difference is where the heater core lines come out at maybe where the bolts for the heater box are. If you need closer pictures or any measurements let me know what you want as i still have the engine out of the NON factory AC car.

 

[eddyw]

Another photo

 

[tempestairbrush]

Here is the close up pictures you requested on the NON A/C firewall.

 

[BrandonDindorf]

Thank you! I think I'm going to write a burp about how to swap it over when I'm done.

 

[Pastorpat]

Do you have any pictures of an a/c car under the cowl where the blower motor housing bracket hangs down? I am adding a/c to a non a/c car. Mine does not have those brackets.

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[MikeGriese]

Do you have any pictures of an a/c car under the cowl where the blower motor housing bracket hangs down? I am adding a/c to a non a/c car. Mine does not have those brackets.

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I am doing the same conversion. Once I get my car back from the body shop I will be able to take all kinds of photos for you. I hope to have it back in a week or two.