cheech147 Posted October 7, 2013 Share Posted October 7, 2013 Any mechanics out there familiar with this set up? I understand it was a popular combination years ago. I have a 78 Mack F series with this combination. Question I have, is that the engine has a regular fan setup. I was wondering if it is possible to change it to a clutch fan. Tired of hearing the manual fan whining all the time and need all the horsepower i can get out of it. Quote Link to comment Share on other sites More sharing options...
kscarbel Posted October 7, 2013 Share Posted October 7, 2013 Certainly you can upgrade to an on/off fan clutch. Give the folks at Horton a call. Quote Link to comment Share on other sites More sharing options...
b61mack Posted October 8, 2013 Share Posted October 8, 2013 My brother has a 78 F Model that had a 350 Cummins in it, I would say it had the same setup on it except its got a viscos fan clutch. I ran a 67 F-737 that had a 250 Cummins 10 speed roadranger for years it did fine back in the 70s early 80s. Quote Link to comment Share on other sites More sharing options...
theakerstwo Posted October 8, 2013 Share Posted October 8, 2013 Like kscarbel just said,no problem. Quote glenn akers Link to comment Share on other sites More sharing options...
cheech147 Posted October 8, 2013 Author Share Posted October 8, 2013 Thanks guys. The dog was a working truck up until a couple years ago. Going to restore and want to make some changes to it. First thing is I want hear the stack without that whine from the fan. Gets real annoying at higher rpm's. Quote Link to comment Share on other sites More sharing options...
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