racer5C
08-25-2006, 12:24 AM
After searching other threads for direction I'm left with even more uncertainty. I have a '71 Chevy truck and a '70 Impala with factory air. Many years ago after they had lost their charge, I pulled the compressors and capped the ports and hoses during engine rebuilds. Now that many years have passed and things have changed, I'm not sure what all components are necessary to replace in the absence of R-12. I've worked around and even detailed the "doghouses" and by itself is not worth the large expense in a total aftermarket replacement just to clean up the firewall. Are later model compressors needed to be efficient and what all is compatible with each other?