TWO different applications:
For a '68 Camaro (396), ...non AC?
...My belief is that a clutch fan was optional, ...but I'm not 100% sure.
For a '67 327/275 WITH AC?
...Here I believe it was standard because of AC, ...again, ...not 100% sure.
For BOTH, ...would this be the FAN used?
(While it's here, ...does anyone know what make/style this fan CLUTCH is? ...I know it's '67/'68 vintage because it's dated 6 21 67 SC. I have it up on ebay and have been asked, ...but not really sure)
Thanks in advance for any information,