New Hayden Heavy Duty Low Profile Fan Clutch # 2947 is a heavy duty version of Jag Style #2765 Hayden fan clutch. My brother just saw this post from last summer on B-Bodies only. I just bought one from Summit Racing, and thought to post it on Moparts also. The new heavy duty 2947 is only about 0.035 inch longer total, so it should easily replace the standard duty Jag fan clutch #2765. After I install it, replacing the 2765 fan clutch, I'll post the results. I'm hoping for a little better summer time cooling with increased fan speed.

Informative links to check out.

http://www.forabodiesonly.com/mopar/threads/short-shaft-fan-clutch.333873/

http://www.forbbodiesonly.com/moparforum/threads/hayden-fan-clutch-low-profile.115490/

http://www.forbbodiesonly.com/moparforum/threads/txdons-67-gtx-project.116786/page-2#post-910513714

https://www.summitracing.com/parts/hda-2947