Mopar Heater And A/C Restoration - Making It Cool Again

YearOne does supply these firewall gaskets so be sure to make use of those as well as the foam tubes around the heater core pipes. The firewall insulation pad was actually in pretty good shape so it was reused.

This end of the box receives fresh air from an opening on the bottom of the passenger side of the cowl. The foam gasket is commonly bad, but a roll of 3/4-inch foam tape from a local hardware store works great. The small rod hooks to the bottom of the cowl to draw the box up tight.

Use more foam tape (about 1x1-inch) to seal the blower motor and cage assembly to the airbox.

The foam around the A/C opening that seals to the back of the dash is not available (that we are aware of), but it is often OK to reuse it. Just wash it in some soapy water and maybe flip it over. If yours is really bad, any soft foam that you can get at a hardware or craft store that you can cut or glue to fit will be fine.

it's a good idea to get a buddy to help you reinstall the entire assembly. What you need is someone on the firewall side to thread the nuts on the studs that hold the unit to the firewall.

Before you tighten up the firewall nuts, insert this rod through the vent opening, hook it into the cowl, and insert and tighten up the bolt to seal the box against the bottom of the cowl.

Don't be tempted to skip installing the foam around these tubes because it keeps debris, water, and cold air out of the interior.

As you can see, we still have a lot of work to do to finish our Barracuda, but this gets us one step closer.