AC to non AC change

[moparfanatic56]

Ok guys I have a 72 dart that was originally a 6 cyc AC car. I am putting a 340 non AC into it so what all will I need to swap out. It appears that I will need to change the control panel but what about the heater box and if so will a non ac box bolt right in? Any advice will be greatly will be greatly appreciated.

 

[1994redram]

Not a direct bolt in. The firewalls are different. The dash controls, wiring, bezel, etc. It's all different. Might be better to leave your A/C box in and keep your wiring and controls all factory. Just plug the A/C fittings off at the firewall.

 

[moparfanatic56]

Not a direct bolt in. The firewalls are different. The dash controls, wiring, bezel, etc. It's all different. Might be better to leave your A/C box in and keep your wiring and controls all factory. Just plug the A/C fittings off at the firewall.

Thanks
That was what I was afraid of

 

[1969VADart]

Not a direct bolt in. The firewalls are different. The dash controls, wiring, bezel, etc. It's all different. Might be better to leave your A/C box in and keep your wiring and controls all factory. Just plug the A/C fittings off at the firewall.

This is exactly what I did with my 69 Dart. It was much easier to just bolt the original AC/Heater box back in the car. I just capped off the AC vents under the dash and removed all the components that come through into the engine bay. Heater portion still works using factory control setup.

 

[pozest]

You may need to change an alternator bracket because when I changed mine, one of the alternator mounts was on the a/c compressor.

 

[67Dart273]

There are aftermarket "heater only" (with defrost) units you can buy which are smaller than the original A body heaters. That would be one way. One caveat.......you will have to deal in some way with the pass side cowl vent.

 

[barbee6043]

I have changed out the firewalls from ac to non ac types. Yes firewalls are always way different.