2 blade fan or 4 blade fan? That is the question!

[old skool]

Hello,

Here is a good question. The last car I built I used a 4 blade fan on my engine. I was told and read that it would do a better job cooling the engine. I just read another "test study" and it said that the 4 blade fan isn't any better at cooling the engine than the original 2 blade. I am starting another build and I am making my check list.

I have both, so I can go either way.

So whats the scoop? Your thoughts out there?

Thanks,
Marty