Don’t Convert to R134a

I recently replaced the R134 in my 71 Charger with R12 using the original compressor. The difference was 15 degrees colder air coming out the vents!

Due to the fact that A-bodies have those centered under-the-dash AC vents, I feel that R12 is best for it. Those centrally located vents take a while to make the car comfortable on a really hot day (90+ degrees). Any slacking on the AC's part can really make it hard to cool. I drove a 72 Duster for 26 years, and the Texas summer heat really could do a number on the interior of that car. I remember when I first got window tint installed in the 90's... wow that was a huge help! The AC always blew nice and cold, but it sure would have made a huge difference if Big Mama Mopar would have integrated the vents higher up and spread out on the dash like in a 70's B-body.

Currently, I am gathering parts to make a relay system for the 3 fan speeds... as the original fan switches are poorly designed and this will alleviate most of the current going thru the switch.