Originally Posted by 59toaster
The A/6 has been around forever. The body has stayed almost unchaged BUT it has had many mounts over the years. It has a BUNCH of different clutch set ups as well. My guess is the brackets are correct but the compressor failed at some point and the compressor and clutch were swapped for the incorrect one.
If the compressor is good you might just try replacing the clutch assembly for one with the correct groove location. Autozone will lend you the tools to remove it and then just get an idea how far off the pully is and see if you can match up one with the correct groove. I am really surprised at how many with double groove ther are. the A/6 on the 454 in my sub is a single groove as has been the A/6's on several 350 powered GM cars and trucks I have owned.
What he said!
Autozone as far as I know, doesn't have the A/C clutch removing and installing tools available, they want you to buy a whole compressor. If you can get it down here, I will be happy to change it out, but it's a long, hot drive from Virginia to South Florida this time of year.