[sYc]

Thanks guys. Have been doing some more checking, including an original Nova reference manual, and spoke with our pals at the Supercar Workshop. It appears early '69 BB Novas came with a 4 blade, and at some point in the year GM switched to a 5 blade. My Yenko is a Jan. car, which from what we can piece together, would have a 4 blade fan. And they mentioned the same thing about the 5 blade unit, rare and makes noise. I knew the reference manual called for a 4 blade unit, no clutch, but I thought that would not be right, since parked right behind the Nova is our L-72 Camaro which has a 7 blade fan with a clutch.

Live and learn.