heater core box
 

I have a 79 k20 that somebody fudged up the box by ripping it open. It is a no ac truck. My question is woukd a box from a ac truck work and will any 73-87 box work?

Re: heater core box
 

i think the ac boxes are different

Re: heater core box
 

The A/C box is quite a bit bigger,if I remember correctly even the heater hose holes in the firewall are in a different spot.

Re: heater core box
 

the outer or inner I know the outers are different

Re: heater core box
 

I think inner talking bout the box behind glovebox

Re: heater core box
 

They are different. The heater core is mounted inside that box, and as mentioned, the lines go through the fire wall more to the passenger side of the truck on the AC box, than where yours go now.

Re: heater core box
 

to bad you wasn't closer I have one sitting in my garage......

Re: heater core box
 

Also AC is vac controlled,heat is cable
(member 79 betty AC, mine without)