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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: TNBandit on November 20, 2015, 07:05:03 am

Title: non A/C heater box
Post by: TNBandit on November 20, 2015, 07:05:03 am

OK new guy here with my first question. My 74 C10 originally had air conditioning. But when I bought it the prior owner had removed everything. Ducts, inside & outside heater boxes, heater controls, etc. and blocked off the firewall with sheet metal riveted over the holes. I would like to put a heater in but don't care about having A/C. What mods do I need to do to install non-A/C stuff ? Anyone have a picture of the firewall from under the hood with the heater box removed so I can see what's different ? I do have access to a non-A/C parts truck. Thanks.

Title: Re: non A/C heater box
Post by: Jason S on November 20, 2015, 08:55:41 am

Welcome from Kansas!

The holes in the firewall were different between the A/C and heater only trucks.

See the link below for photos of firewall going from A/C to non-A/C.  In the photo, the center hole had already been cut for the heater box, the original A/C hole is the rectangular hole.

http://forum.73-87chevytrucks.com/smforum/index.php?topic=21690.msg179454#msg179454 (http://forum.73-87chevytrucks.com/smforum/index.php?topic=21690.msg179454#msg179454)

Title: Re: non A/C heater box
Post by: TNBandit on November 20, 2015, 09:28:23 am

That helps. Thanks

Title: Re: non A/C heater box
Post by: harcorshe on November 26, 2015, 03:49:49 pm

I just "deleted" my non-working A/C and used "ACdelete" or some such named website to fix up the firewall. Here is a before and after...