Heater box differences, question.

[big66440]

Do  you guys know if the heater box itself ( black box that has A/C evaporator and heater core under the dash) is the same for all Cherokees up to 1996?

I'm planning on yanking one from the JY  cleaning it up and having it ready to install in my 89 Comanche, thanks.

[Jeepjeff859]

I pulled one from a 1996 for my 1986 4.0 swap and every thing lined up and worked, the ducts were torn apart so I have to make new ones

[Gjeep]

Trucks with AC will have under dash boxes on the evaporator core side that are the same. Non AC equipped trucks have slightly different boxes on the right side. Heater core boxes are the same in both AC and non-AC equipped vehicles.

[big66440]

I pulled one from a 1996 for my 1986 4.0 swap and every thing lined up and worked, the ducts were torn apart so I have to make new ones

 

That pretty much answers it, thank you.

[Jeepjeff859]

Might as well replace what you can while it's out

[big66440]

I sure am I plan on insulating the firewall as well, I've been insulating with "rattletrap" and have been very pleased with the results. My plan is to have the heater box clean with my new heater core and A/C evaporator as well as having a clean and painted dash ready to be installed so I can focus as much time as possible in sealing, insulating and cleaning that area. I figured that would save me at least 4-5 hours to really focus on the firewall.