I have a 1954 3600 with a 56 car motor. Just finished adding Vintage Air system to the truck. What a difference in these Arizona temps. The Sanden compressor calls for a series 17 or a 1/2" belt to be used of either Gates, Goodyear or Dayco brand. My waterpump pulley will accept a 3/8" belt but the 1/2" will fit. Is there a pulley made of the same diameter of mine but with a 1/2 " groove? I do have the adapter plate and moved the pump to the middle of the radiator. Maybe a complete short nosed pump is offered? I'm sure with all the a/c being added that someone has run into this problem. Thanks for your feedback.
Sharon