Hello i am wanting to remove my A/C evaproator setup under the hood. Is this easy to do and will it be easy to and when i go to hook the heater back up will this be easy to do also? I am removing it for weight reasons and i am rewiring my truck and im not gonna even use the A/C anyways. I have a 1975 F250 with a 1977 460 in it. any comments would be helpful!!

 

unfortunately removing it is not difficult. there are two housings that hold in, one under the dash, and one under the hood. When you "split" those housings by unbolting them at the firewall, the evaporator and all associated parts pretty easily come with them. However, so does the heater core. The heater core is housed inside that evaprator case in ac trucks. In non ac trucks, it is housed in a different style housing under the dash. THe biggest hurdle is to close up the enormous hole left in the firewall with the removal of the AC. if you had a donor cab, you could cut and weld that chunk of the firewall back in, and possibly get the correct housing and associated hardware.

 

You can actually get the evaporator out by only pulling the half that that is under the dash, and removing the little metal cover where the hoses come out of the underhood box. You have to remove the hard ducting that runs over to the far passenger side vent and you have to take two screws out and disconnect the main hard duct and pull it forward just a bit to get the metal lines through the through the housing. You'll see what I'm talking about when you get in there. The nut on the big suction line won't want to come through.

That is if you're not trying to get rid of the big box under the hood. The heater core is mounted up in the front of the big box that is under the hood. Because like Witty said the a/c and non a/c trucks are totally different. A/C trucks have a huge hole in the fire wall.
The crappy red line is the main duct part I was talking about where you would have to disconnect to get the hard lines out. The blue line is the hole that will be left after you take both halves out.

 

Thanks for the info it looks like i am going to leave my setup as it is because i need my heater to work for the cold days. It looks like you will not have a heater if you remove the big box under the hood. I just hate the big box under the hood as i do not run the a/c it just takes up space and adds weight!!

 

I have a 77 f250 crew cab with a/c and i'm wanting to get rid of the a/c and the huge fan shroud under the hood. Does anyone have any thoughts on what i need to do to accomplish this? I know I will need to fill the huge hole when it is removed with either a donor firewall block-off plate or fabricate a piece to fit in its place. I'm just not sure what is needed to still have heat. Any ideas would be greatly appreciated. Thanks.

 

Check out this post from 9thpony's build thread:https://www.ford-trucks.com/forums/1...l#post13353616
It wouldn't hurt to look at the whole thread, nice CC build.

 

I live in southern Wisconsin. Almost every vehicle I've owned since 1972 has a.c.
In the late 80s I bought a tired 61 Galaxie sedan. I paid $50 for a used Fridge King
and installed it myself. I replaced the compressor on our 75 F-150. I HATE SWEATING !
Any vehicle is worth more with working a.c. Wives and sweethearts appreciate
working a.c. in a sharp looking Ford. My wife would refuse to ride with me.

 

You have a 460 under the hood and you're worried about what the evaporator core weighs? As far as weight savings go, if you did take it out you wouldn't even notice.

 

Our F-150 is powered by a 390. The gas mileage is great if your cruising down hill with
a tail wind on a good day. Her name is Stella. She is purple in color with a Ford topper.
(sold as a Viking Edition way up in Minn.) She has white stripe tires and wheel covers.
She would be naked without working a.c. on a hot day.

 

its easy take your time there are 7 bolts total 5 of which unbolt form the engine bay and 2 from under the dash

 

but that is going to leave some major holes in that unit i hope your good with fiberglass

 

i just deleted mine cause i am going with an under the dash unit

 

Does the under dash unit provide heat?

 

Nostalgic Air has an in dash unit that has both A/C and heat. They also have one with just A/C and they also have an under dash unit.
Nostalgic AC - 1973 - 1979 F-Series Truck Heat A/C & Defrost - Ford AC Kits For Trucks - Ford Complete Kits - Complete A/C Kits

 

If you have the patience, you can install your own aftermarket unit. If A/C is not important (I live in Ca with a few 100F, lots of 90F, DRY air days, but I like my windows down), then you can get heater units only. I did mine. The only change I will probably make is to place some sort of metal to cover the firewall.

https://www.ford-trucks.com/forums/1...ng-my-way.html