Which fan clutch should I run???
I had a problem with the jobber fan clutches.
They are all too long I found. I had a factory 7 blade fan for my 71' 340 Duster with a stock rad and it had an old if not orignal clutch.
I wanted a shiney new one and tried all the parts store ones with no luck they all hit the rad or where within 1/4" of doing so.
The mopar viscous fan package is basically a clutch with a free fan in regaurds to the price compared to the jobber clutches.
I used the mopar clutch and it fit great same size as the original.