Jerry,
I used the mfg's recommendations of an under-dash unit. It has its own circuit; I believe that I only want the compressor to come on at above 1500 RPM and will be using a GM throttle advance solenoid. Im just fighting time and oil leaks out of the front seal at pulley. turbo gave me the answer to the shaft repair but I just haven't ordered it yet.
314159td,
I modified the 843 pulley. I'll post pics ASAP but both engines are on my thread 0453r. reassembly.
Dakazman