Water Pump Vanes (propellers)

The biggest rad in 70-71 was 22" in a Duster. In fact the 318 rad held 17 Qts. and the 340 held only 15 Qts. The stats on the pulley are .95:1on standard non A/C and on A/C is 1.31:1, which is telling me A/C pump turns slower. Who ever thought of all this confusing nonsense must be Einsteins brother.