clutch fan gap too short

Dana67Dart said
Im thinking it is an early A and a \6 based on the info from the posts, and the OP is trying to eek out an extra HP or 2.

No, it's a '65 Barracuda with a warmed 360 and an A833. It's not a HP race for this project. I'm simply solving a problem I felt needed attention. This topic has come up many times here at FABO. It seemed a good moment to do some research.