1969 Z/28 02D 1100837 Alternator Hook Fan Color and Thickness

[RikerZ28]

Hello All:
Cold winter days working on the car, today doing some detailing and have a few questions. What is the color of the factory Alternator fan?
The other question is when I purchased the car it had an extra Alternator a 1100834 dated 9B22 with a regular fan (not hooked) I measured it and it is 0.100 thick. The one on the car with a 1100837 dated 9B4 has a hook fan and it measures 0.062 so I'm thinking the
 fan is a repo?
Any thoughts? Thank you in advance for your help!
Bob   

[william]

Engine bay photo dated November 1968.

[RikerZ28]

William, Thanks for the picture.
I was sure it was plated silver, but have seen a few in black.
Now that brings up the question, the picture I assume is a 1969 production Z/28? I tried to zoom in but it looks like the fan is not shark toothed. It looks like the one I have as a spare and it thickness measure 0.100 and the one I have that is sharked tooth is only 0.062.
Confused?
Thanks
Bob   

[william]

The Legends manual states the 'hook' fan is early production; non-hook version starts around May. The car in the photo is known to be a Fall '68 build.

In addition, the survivor '69 Z/28 that came to light last year is a Dec '68 build; has a non-hook fan. Scroll to post #6.

https://www.yenko.net/forum/showthread.php?t=175266

My guess, both were used.

[RikerZ28]

Thanks William!
So it comes down to preference??Well Ok, but why is the non-hook 0.040 thicker than the hook unit. I guess I'm concerned that the the hooked units folks are trying to be peddled today at 0.062 are not original?  Would love to get a member with an original hook fan of early production (before May 69) to get me a metal thickness. This will help all of us wanting to use original parts if available.
Thanks
Bob