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1969 Mach I 428 CJ restoration - ADD A/C questions

2K views 10 replies 7 participants last post by  rpm  
#1 ·
Good afternoon all,

Although I am doing a complete restoration and trying to stay as true to the original car as we can, calling it concours would not be correct. My Mach came with forced ventilation NOT A/C. As I am working through the restoration I have been struggling what to do about that as she resides in FL.

I was able to locate a complete lower dash in pristine shape with the A/C side vents. Also the COMPLETE (as near as I can tell) duct set up, compressor, evaporator, blower, bracelets and pulleys. BONUS!

Based on one of the markings it looks like this A/C setup came off of a 351. (see Pic) As near as I can tell the 351 set up shares a lot of parts with the 390/428 set up. At least according to the schematics I have.

So.....

Should I plan on replacing the compressor with a more modern one? or can it be rebuilt and use modern refrigerant?

Does anyone have a horror story or preferably a success story doing this they can share?

Any do or dont's would be appreciated.
 

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#5 ·
You’ll get more replies in the main forum, I’ll move you over.
 
#6 ·
My '68 KR has factory a/c, with the original compressor, and it performs smoothly and flawlessly. So if you're trying to stay as "true to original" as you can, I wouldn't plop a Sanden under the hood.

Also, if you're close to stock bore you shouldn't have any hot-running issues whatsoever.

Sounds like you've already got most of the bits you need. The only thing different between small block and big block are the brackets and pulleys.

I'd go for it. And yes, you can run modern refrigerant in the old compressor. I'd call Classic Auto Air for advice and for rebuilding necessary components.
 
#7 ·
All of my ford's that have original Ford ac systems converted to 134a blow the the aftermarket systems out of the water. I'd add a sanden compressor and refurbish the rest.
 
#8 ·
Lucky for me the Classic air folks have their A/C refurbish facility about 30 minutes away from me. Which is less than 15 minutes from where my car is being restored. Just dropped off all of the A/C parts yesterday to be restored.

Does anyone have pics they can share of a finished install on their 428CJ? Curious about a few things.

Thanks in advance.

 
#10 ·
My advice is to never try to use old a/c parts except the vents and dash for an original look inside the car. I had a 71 ranchero with factory a/c I spent thousands of dollars upgrading the a/c from the f-12 to r-134. What a nightmare. Every part failed one at a time after the initial conversion. Each time costing me time and money. Factory a/c is ancient technology. It uses vacuum to operate the controls. The compressor is 1960s technology. On my next car, a 70 Torino, I went with a complete a/c system from vintage air. Everything was new and worked perfectly. I used the old vents, but everything was new everywhere else. I loved it. Newer compressors are way more efficient.
 
#11 ·
One area that I've run into using the factory evaporator and a Sanden compressor, is the hose and fitting sizes. The low pressure large line at the firewall to compressor is a #8, while the low pressure fitting on the compressor is a #10. You might say just get a #8 to #10 fitting which is shown in the parts catalog. The problem is that the dealers and manufacturers don't have this part available. I'm going to cut and splice 2 fittings to make mine.