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you can flow the coolant to the radiator as fast as you want but if it doesn't have the capacity to cool it whats the point. a 22 inch 2 row radiator is not going to cool a big block engine especially when it's hot out. take your radiator to a radiator to a shop and have it re-cored to at least 3 rows.



My 383 '70 Valiant did fine (steady 180-185 under all conditions) with a 22" 3-core with a flex fan, although it was a 4-speed so no trans cooler, and no a/c or power-anything. When I tried the same rad with a 6-71 blown 440, it wasn't near big enough even at highway speeds, let alone in traffic.