1955-59 GMC air conditioner

[Yezzi]

I have a 1957 GMC Deluxe and looking to purchase a period correct air under dash air conditioning unit. Does anyone have any info or pictures of one?

[Daze57]

i have a a/c unit that i used in my 57 - i dont use it any more; it is an under dash unit - have all parts i believe it came out of an early gm

[beanyard]

Originally Posted by Daze57

i have a a/c unit that i used in my 57 - i dont use it any more; it is an under dash unit - have all parts i believe it came out of an early gm

You should post a picture.
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[Yezzi]

yes do you have a pic?

[Daze57]

will get one and post it

[_Ogre]

there is no period correct ac unit for 57, first ac in a truck was 59 and it was floor mount.
any 60s era under dash unit will be r12, not much r12 anything floating around anymore.
vintage air has a neat mark IV under dash unit that looks very 60s and has a metal case and chrome face plate
very retro looking, it looks like they brought back an old unit

[Daze57]

ahhh yes i forgot about he R12 thing -
ogre is correct - R12 is very hard to find and it aint cheap $50+ a can . soooooooo ya might be better off with what ogre suggested ........ good luck !

[1project2many]

Many R12 systems can be changed over to 134. Smart money would be replacing the original hoses, compressor, any drier, and maybe even the control valves as well. All the replacement parts would be compatible with R134. The system might not be as cold with 134 but it's still cooler than none at all.

[lmdangerous]

I still have two systems set up for R12 and they are ice cold- even when not moving. My local NAPA sells freeze 12 - which is compatible in the R12 system for about 12$ a can. Just a thought...

[Texas50]

Beware of the freeze12. Major component is propane. Your evaporator core springs a leak, you might go kaboom.
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