I get the idea the more cores (similar radiator builds), other things remaining the same, do NOT cool better. Seems an odd thing to (not) happen...but that's why I asked.
Keep in mind that it's apples and oranges... or at least two different types of apples :D
A radiator with three rows of 1/2" tubes definitely cools better than the same area with two rows of 1/2" tubes. I found that out in '83 while building my first big-block A-body... the recore was $140 which was a fair amount of cash back then.
These newfangled "two-row" radiators have very wide tubes of 1, 1-1/4 or even 1-1/2 inches. They DO cool a lot better than a stock three-row!
