I'm glad to be part of this support group. i have a 1985 El Camino, 305" engine, 4BBL, 2004R Auto trans., Nice shape. Bought it in Elkhart, Ind. As most of us always say, "A work in progress!" I'm currently working on the A/C/Heat. I have air blowing out of the defrost and floor vents. No matter how I move the controls, nothing. Checked the vacuum ball and the lines. Seem to be OK. ANy help appreciated.