How much cfm blows the stock fans?

[SAM/CH ZR-1]

Does anybody know how much the stock cooling fans blow?

[WVZR-1]

Originally Posted by SAM/CH ZR-1

Does anybody know how much the stock cooling fans blow?

I've never seen GM rate their fans by CFM, the 90+ C4 fans are designed for I believe 2100 RPM, by a 150W motor and are 11 3/4". CFM can be deceptive. Here's a good read maybe that explains:

http://www.oldairproducts.com/catalog/electricfans.php

A very old "cure chart" from DeWitt on the CF. I'm sure there are more current charts but I didn't look.

http://www.corvetteforum.com/forums/...post1561968603

I had seen this post years ago and was able to find it again. A friend (a painter) pointed it out originally. Similar fans I expect WITH NO LOAD:

http://forums.trailvoy.com/showpost....&postcount=125