Need help determining which fan I have
 

The original owner of my 66 327 L79 coupe had aftermarket a/c installed a couple of years after she bought it. I'd like to know if they replaced the original non a/c fan with an a/c fan at that time. I'm guessing this is the original non a/c fan.

https://lh6.googleusercontent.com/-q...2/IMG_0734.JPG
https://lh6.googleusercontent.com/-l...0/IMG_0732.JPG
https://lh5.googleusercontent.com/-3...0/IMG_0733.JPG

That sure does look like the original fan. With the correct markings and rivets. It should measure 17 1/8 from tip to tip

Yes that is the diameter of my fan. Did the a/c fans have a larger diameter? I believe they had more blade pitch.

AC cars used the same fan

Take a look at this:

http://www.corvetteactioncenter.com/...blade-fan.html