The factory R4 compressor that was originally used in the 1978 through 1988 Chevrolet model years (affectionately referred to as G-Body cars) has proven to be notoriously unreliable and is frequently cited by mechanics...
From our mailbag - here's a recent email from Ray: I just installed my new rotary compressor using the York to Sanden compressor & u-shaped idler adapter brackets you supply in your kit. I attached...