26" radiator for a slant six?

72Dart6pack said

The opening on the core support is only 22 inches. Not sure what you would do with a 26 inch Radiator?

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How big the opening is has little bearing on cooling. The water in the radiator is moving, so it's all going to see air flow. The bigger the radiator, the better. The core doesn't have to all be exposed for the radiator to work correctly.