Converting a Non AC car to Factory AC

I had typed this out in a reply I just saw pop up and wanted to save the writeup for future reference. I know my descrption needs some refinement but will serve as a start:

Going from a non A/C setup to an original A/C setup (63 or 64) is a large undertaking requiring many components. I've had one customer that I know did a complete conversion and ended up renting a room a few miles from me and going through everything.  There are some alterations that need to be made (e.g. firewall) and some large pieces that need to be replaced (e.g. core metal dash) and things that need to be switched out to accommodate AC parts (e.g. cylinder head cross over pipe/water intake).  With the 64 system you will have some different components and additional components but going to an original 63 or 64 will require a laundry list of parts and some physical modifications or changing around your dash and firewall.

I'm guessing there are easily 30+ parts total but some of the main things to consider for either 63 or 64 system:

Engine Compartment: Compressor and compressor coolant lines and mounts, compressor belt, Cylinder head outlet pipe (water intake) with extended arm to support compressor, 5 bladed clutch fan (or later model 7 bladed fan) and radiator shroud, condensor and mounting supports, condensor to evaporator line, dehydrator/dryer and brackets, evaporator with Suction throttle valve, You will need a hole cut in the firewall on right side for evaporator, 3 groove crank and water pump pulleys, idle speedup control wiith bracket for carb, heater blower box assembly with recirculation diaphragm.

Inside car: The physical dash needs holes to accommodate the AC Vents on sides and center. It is easier to just pick up a new core dash (which I have), Other items include  Left, right, center AC chrome dash outlets, and ducts and clamps, AC-Heater switch control panel, additional vacuum lines and wiring harness for AC/Heat setup, under dash heater box and core and cross over duct, inner heater/ac box to Evaporator duct and clamps, kick panels to replace your vented heat-only panels.

For the 64 Comfort control you will also need a few other items including power servo and transducer, 3 sensors including the dash sensor, mode door diaphragm ambient air switch time delay Or replacement Master Vacuum Switch,  heater water control valve, with thermal vacuum valve.

I am probably missing a few items but believe I got most of them.

A general pricing for all parts in VG condition is $1800 + s/h for the 1963 setup or $2500 for the 1964 Comfort Control Setup. What I don't have I can put you on the Wait List or some of our other parts suppliers may have them.

With the many parts and size and weight of some, I would suggest coming down for a day going through the parts and saving a ton on shipping.  That 40 lb compressor alone can really set you back depending on your location if all of the items are shipped.  If interested email me at jasonedge64@outlook.com 

Views: 1117

Comment

You need to be a member of 63/64 Cadillac Website to add comments!

Join 63/64 Cadillac Website

Comment by Jason Edge on July 30, 2026 at 7:22pm

Here are pictures of a heat only firewall and ac/heat firewall. Note additional cutouts for evaporator ( far right passenger side), outside air (top center), cabin recirculated air ( top driver side). 

Photos

  • Add Photos
  • View All

Forum

1964 Cadillac DeVille for Sale

Started by Jason Meyer in For Sale 10 hours ago. 0 Replies

Hey everybody, I have a family owned since new 64 Cadillac model 6267 Deville Convertible I have to part with. It runs strong with a 429 V8 original engine with 90,000 miles on it. Suspension has…Continue

Tags: 1964, Convertible, Original

Take heads off for rebuild

Started by Ian Arnold in 1963/64 Cadillac Specific Discussion. Last reply by Kurt on Saturday. 13 Replies

Compression test 15 years ago was good. Not a lot of miles since then. Summer car.Last year had a oil pressure issue. Found an aluminum flake had stuck open oil pressure relief valve. (Low pressure…Continue

1963 Dashboard With Autronic Eye Hole

Started by Earl R in For Sale. Last reply by Earl R on Friday. 4 Replies

I bought this from a yard in Washington state.  I was told it was pulled and kept inside as soon as the car came in. I was going to dye and install it in my '63 Eldorado but sold the car.  Please see…Continue

Tags: Dash

Congratulations Logan Robb!

Started by Jason Edge in Chapter Discussion. Last reply by Dennis P. DiBari Sep 24. 1 Reply

A Big Congratulations to 63-64 Chapter member Logan Robb with his October 2026 The Self-Starter cover story featuring his 1964 Fleetwood 60 Special.Way to go, Logan!!…Continue

Blog Posts

Authenticity Manual

Posted by Dennis P. DiBari on August 27, 2026 at 12:45pm 2 Comments

Hi Robert,

     I emailed you more pictures for the Authenticity Manual.

Dennis DiBari

1963 RHS A/C kick panel - photos needed

Posted by SK on June 2, 2025 at 2:20pm 2 Comments

Could someone post front and back photos of the 1963 right-hand kick panel with A/C?

My car didn’t come with the original kick panels, so it's a bit of a mystery to me how I should cut the backing board and carpet to fit around the A/C.

Many thanks,

-Samu

'63 Tailfin Tales

Posted by Mark Mata on February 22, 2025 at 5:00pm 9 Comments

New old stock seat material

Posted by Ray Schick on August 22, 2024 at 6:25pm 2 Comments

I bought this seat material thinking that it’s…

Continue

Videos

  • Add Videos
  • View All

© 2026   Created by Jason Edge.   Powered by

Badges  |  Report an Issue  |  Terms of Service