M code Cooling system questions

Dana67Dart said
I know the outlet is larger 1-3/4 dia for the BB vs 1-1/2 for the SB, does anyone know if from factory it was 2 or 3 core?

66fs said
3 core.

How about that, (for all the naysayer out there) the factory cooled a 440 with a 22" 3 core radiator, a mechanical fan, 190 deg thermostat (160 is NOT recommended).

(sarcasm to follow!)

How can that be???? Only an aluminum radiator with electric fans and 2 x 1 inch cores could possibly do the job!:rolleyes: