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electric fans and what are the CFM's they're pulling

4K views 3 replies 2 participants last post by  AAIIIC 
#1 ·
I am having to fabricate either a new shroud or continue modifying the factory one, to get the Meziere WP & Ron Davis to fit.

Does anyone now what CFM the 5 blade pulls?

what about the 7 blade?

I have found several options, but curious to know what the factory ratings are. I would like this to be an upgrade and not accidentally downgrade with less powerful fans.
 
#2 ·
I know good ol' Naf did some testing of the stock fans relatively recently, but I don't know if he got actual cfm numbers for them.

From my own shopping around for some electric fans for an engine swap in my Subaru, I have to say that I'm not sure any numbers you find will be useful. The variation in the numbers that the aftermarket fan manufacturers provide are so massive that you can't even compare them. Some of them seemed like they were downright make-believe.
 
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