Hey all, What's the factory dual-groove alternator pulley shaft diameter? It's a '72 350 with A\C. Also, what diameter is the factory pulley? 3.25" or 2.5"? The previous owner swapped in a Chrome-Will-Get-You-Home unit with a single groove pulley. The A\C stuff was removed and the alternator pulley is the only thing I'm lacking for the belts. The rest of the pulleys are correct. If I can get this pulley off and the shaft is the correct diameter for a factory pulley, I won't have to replace the alternator. Either way I need to buy the correct pulley to hook up the A\C compressor. Thanks!
