Anyone ID this fan and clutch?

[camarojoe]

Not sure where I even got this from... found it in my parts stash today while digging for something else. Looks like a 772 fan, but I can find no numbers on it anywhere. The clutch has a "CH" ink stamp on the front... What is it?

[camarojoe]

Backside...

[camarojoe]

clutch...

[Ls6 Ragtop]

Joe, That is a 772 fan. GM used 2 different suppliers for these fans. One has the part # and date code, the other does not have any part # or date stamp. If you remove the clutch from this fan it should have an H and the word FRONT stamped on the hub section under the clutch. Fairly common actually and because of no date code can be used on anything that would have used a 772 fan. Not sure on the CH clutch usage, but that style clutch was primarily pre 1970.
Chris

[camarojoe]

Thanks Chris! Anyone know the clutch application?

[Mr70]

Any 1969 small block equipped w/AC or a temp.controlled fan.

[camarojoe]

Thanks.

[Kurt S]

I've never seen that design in a Camaro after 68.
http://www.camaros.org/coolingsystems.shtml#fan

[camarojoe]

You're speaking on the clutch not the fan, correct?

[sprchvy]

While we are on the fan clutch subject. Can anyone determine what an Eaton CO unit would be used for? It came attached to a 772 fan.