Vintage Air install on 78 Wagoneer
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
Here are the holes in the firewall that we cut for the heater hoses.

1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
Then I used a jigsaw to cut across from hole to hole. I need all that length so we have room to slide the 90 degree bent heater hose on to the heater core.

1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
These plates will have a weatherproof grommet that the heater hose will pass through.

1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
The evaporator comes with two brackets. The main one bolts it to the firewall, the other one bolts to the dash. I guess they don't want it hanging and possibly breaking the case. The bracket needs to be modified. This is what I did. Cut this piece off of my parts Wagon.

1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
This is what we came up with.

1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
This is it under the dash, it sits on that bottom lip of the dash.

1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
This is it all welded up and painted. Will try and bolt it in tomorrow.

1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
I cut huge ovals in the firewall because I needed the space to get the heater hose with the 90 degree bend on the fitting inside the jeep. Before you start cutting up your firewall, they do make different hard lines bent at different angles, but it will make it harder to get the evaporator in if the dash is already in, like mine was.

1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
Also the glove box won't fit because of where I mounted the evap. I started cutting it up. Not sure if I will ever get it back together, we will see.

1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
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- Vendor
- Posts: 522
- Joined: Sun Apr 07, 2013 7:38 am
- Location: Sonora,Ca
- Contact:
Re: Vintage Air install on 78 Wagoneer
Creativity is the mother of invention!
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
Defrost ducts are in. If you can get these in before the dash is installed, do it. Drivers side is easier to do with the cluster out.

1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
I put sealer around the vent where it contacts the under side of the dash. Probably didn't have to do that, but I did.

1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
Also received my 12 inch electric fan and a few fitting from summit. Going to use it as a pusher, no room on the other side of the radiator.

1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
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Topic author - Posts: 152
- Joined: Mon Feb 23, 2015 9:14 pm
- Location: Mandeville Louisiana
Re: Vintage Air install on 78 Wagoneer
1978 Jeep Wagoneer
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
401/turbo 400 transmission Quadra-Trac BW1339 (with Low) 4" Rusty's lift with 31" Summit Mud Dawgs
Mods:
Fuel Tank, Red Holley Electric Fuel Pump, Razor Grill, Rebuilt steering box
-
- Vendor
- Posts: 522
- Joined: Sun Apr 07, 2013 7:38 am
- Location: Sonora,Ca
- Contact:
Re: Vintage Air install on 78 Wagoneer
Coming right along!,
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Sent from my iPad using Tapatalk
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- Posts: 117
- Joined: Mon Jan 14, 2019 1:13 pm
- Location: Leander, TX
Re: Vintage Air install on 78 Wagoneer
Looking good!
1978 Cherokee Chief WT in a thousand pieces
Previous Jeep: 2001 Grand Cherokee
Previous Jeep: 2001 Grand Cherokee
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