Does A Big CI Stroked SB get to a point where It is hard to keep cool?

There could be something to it.


But the radiator, fins per inch, tube size, tube count, tube spacing.

Water pump vanes, pulley ratios.

All have to work together.



A poorly designed system won't cool a 273, and a propperly designed one will cool a 440 in an A body


I have heard of 40 or 60 oversized blocks being particularly hard to cool, theory is the cyl walls are too thin and there is an excess amount of heat generated in that location that can't be carried away efficiently.