A/C Compressor Question

Discussion in 'Trucks and Trailers' started by a87ss305, Apr 19, 2001.

  1. a87ss305

    a87ss305 LawnSite Member
    Messages: 20

    Does anyone know which A/C compressor the 81-91 big block crew cabs used? The R4 or A6? Or could they have used both? I'm considering buying a 76 parts truck with the A6 compressor and was wondering if it would be compatable with the 81-91 crew cab that I will purchase when I find a good rust free cab to buy in the future.-Thanks Mark
  2. Dave1250

    Dave1250 LawnSite Member
    Messages: 15

    If you Email me with all info on truck I will look it up . But if the truck has been sitting a while the seal will be leaking around the shaft behind the clutch most likely .
    clemonsd@westelcom.com Good luck
  3. John DiMartino

    John DiMartino LawnSite Silver Member
    Messages: 2,555

    Im 98% sure the 81 and newer use the R4-across the board on GM's.

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