Just out of curiosity Scott.....what other "freon" is there other than the 134? I just had my old truck changed over from the R-12 last week, and the Mustang changed over to 134 a few years ago. I was given no other choice because the R-12 is no longer available. Is there another option other than 134?

 

ok so like could you point me to the correct....or just cheapest kit that would work in my 1968 coupe??? i can tell its going to be a scorcher this summer.....i might get this before i start spending money on tranny stuff.....ive got graduation coming up.....would make a prime present.

 

Glen, I think the only type of freon is R-12 and R-134. I have never seen any other before.

 

Here is a link to install of a/c for 67 and 68 stangs..http://www.mustangandfords.com/howto/25639/

As for a/c kits...
Vintage Air http://www.vintageair.com/index.asp

Classic Air
http://www.classicair.com/

Rainbow Products
http://www.rainbowproductsonline.com

Just a few but I'm sure others can chime in with their favorites as well...ehhhh maybe Soaring can post A/C links in the FAQ sections

 

During the change over from R12, there were all kinds of different mixes of reduced content CFCs (at least out here in California). R134a requires a greater pressue differential to cool as effectively as R12. All the new systems are designed for this. However, just changing from R12 to R134a in an old system was not as efficient, and a lot of people complained that the car did not cool as well (rightfully so). Some of the interim mixes did a better job of cooling the car, than did a direct change over to R134a. You used to be able to go into your local "Pep-Boys" or Kragen and buy a kit that came with the refridgerant and a special set of adapters to denote that type of refridgerant.
Today you would be hard pressed to find any of the interim gas mixes as they still contained CFCs (except for maybe outside California, where the laws aren't quite as stringent).
Google R12 and you should be able to find information on the transitional period, as well as it's availability, and what it does to the earth's "bald spot". Pensoil was one brand I remember that had a "special mix" refridgerant kit.

Scott