Cinnamon 75 Duster \

I would have liked to have my belts ordered ahead of time, but could not find any definite numbers. Unless I missed it, it does not seem to be in the service manual. I guess there are just too many combinations.

I knew the old ones were tight when I removed them, so did not want the same and had not paid attention to how much bigger I needed. Nobody seams to stock v-belts much since all the new stuff is serpentine. So, you can't just go look at a rack of belts and grab the next size up or down anymore. Every place I looked online had multiple possibilities and were not very clear which was for what. So, had to wait till it was back together and figure it out before I could order. Then I had to teach the Autozone guy what the belt numbers meant so he could tell me what was available -LOL. Anyway, for future reference if you have a slant six with this setup ( 1975 ) - these sizes will get you near the middle of the adjustment ranges with everything tightened. Air conditioning 17555, Power Steering 15400 and Alternator 15570.