1963 Cadillac AC Heat Air Box Mode Door Demo

I had a 63 Cadillac AC/Heat Air Box testing the mode door actuator and thought that might be a good show and tell video candidate and recorded this short cli...

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Comment by Jason Edge on September 1, 2025 at 7:37am

Kenneth, See picture below of the mode door spring installed. I do have an extra in good condition for $10 ($7.50 after discount). Email me at jasonedge64@outlook.com

Comment by Jason Edge on August 31, 2025 at 10:44pm

Yes, there is a spring. If you need one I can see if I have one tomorrow.

Comment by Kenneth Barton on August 31, 2025 at 10:39pm

Do you recall if there is a return spring on the interior side of that mode door? 

I took mine apart and there appeared to be one with one end broken. Just checking my work. 

Comment by Chris Codd on December 18, 2022 at 5:52pm

Very interesting. Looking forward to seeing how you go about rebuilding your Climate Control system in the future. 

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Forum

64’ A/C Power Servo - Vacuum Actuator

Started by Jacob Foster in 1963/64 Cadillac Specific Discussion. Last reply by Bernie Long Jan 1. 1 Reply

Gents, good morning!I’m looking for advice on how to fix the A/C Power Servo on my 1964 Cadillac Deville. The unit itself seems to be working correctly, but the vacuum actuator is leaking off. Has…Continue

CLASSIC CADILLAC PARTS CLOSED JAN 5-11, 2026

Started by Jason Edge in For Sale Jan 1. 0 Replies

Hello All,HAPPY NEW YEAR!Just a heads up that I will be in…Continue

NUTTY Fastener Trivia

Started by Jason Edge in Trivia Jan 1. 0 Replies

Ok. Here is a fastener I see about every day working with my big inventory of fasteners, and thought it was worth posting as trivia. If you saw my post on Facebook (I do sell them), wait to see if…Continue

2026 63 64 Cadillac calendars for sale.

Started by Russ Austin in General Discussion. Last reply by Russ Austin Dec 28, 2025. 2 Replies

The 2026 63 64 Cadillac wall calendars are out and for sale at 16.00 each plus shipping. Please email me at russ@thecadishack.com to get yours.  …Continue

Blog Posts

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

Edelbrock Carb Block off Plates

Posted by Chase on March 12, 2025 at 2:05pm 14 Comments

Hey guys,

I have installed the same Edelbrock carb and have done everything the same as Jason’s carb and intake project. In the spring and summer months the car starts, runs and idles great! In the fall and winter months on a cold start, the car starts awful and wants to die until it warms up. I have to keep my foot on the throttle until it warms up or it will idle just terrible and try to die. Once it’s warm, it runs fantastic! Whats going on here? I was thinking of removing the…

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'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…

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