Firewall a/c conversion

[moprr]

Just wondering if there is much to change on a fire wall to go a/c on an original base car.  I was looking at aftermarket options that bolt in but I can get a good original a/c box for a good deal.  wondering if it is worth it or if there is major differences. Thanks

[7071 challenger]

If you look as some cars with factory A/C, you'll see for yourself that the blower motor is larger on a A/C car. So the hole on the firewall is also larger compared to a non A/C car. You will have to cut another hole in the firewall to let the evaporator tubes out in the engine compartment. If you go the aftermarket way, (Classic auto air, for exemple), everything goes out to the engine compartment through the original blower hole, so no modification needs to be done to the firewall, but, (in my opinion), it looks weird under the hood without the blower, (the Classic air kit hides the blower inside the car). Hope that helps.
Robert

[Topcat]

The locations are different also.

[moprr]

thanks for the pic

[Topcat]

I converted mine from A/C to non A/C. My car will have a Hemi and I like the look of a non A/C dash much more than the A/C ones.

I'm sure you could do the reverse of what I did.
After it was tack'd in place, I spray canned the inner side. That told me where to cut.