Just curious what the comunity thought about the three different fan options for our daily driven slant powered vehicles with regard to cooling, horsepower gain/loss and fitment. Comments welcomed and encouraged, I realized that I have all three choices in my driveway. We'll leave electric fans and race vehicles off the table for now.

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Tough to find a clutch fan that'll fit the pre-'67 A-bodies. See here for discussion of clutch fans, here for info on a clutch fan that might fit, here for a discussion of flex fans, and here for a long discussion of faith vs. science in determining the effects of a fan swap. More threads and posts by searching flex fan with the board's search function.

How 'bout an electric fan with an upgraded alternator…?

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Dam, I couldn't find an emoticon to symbolize "raining on my parade", do you think you could help me out with that?

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Well, Kev and Nev at GPRS Mopar (the ones who make the nice Australian manifold gaskets) have said they're working on a clutch fan package that'll fit even the tight early engine bays, but then they have also said they'd work on a new-tech head gasket for the aluminum 225…

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

I can't vote cause you don't have a "5 blade viscous" listed. Sorry

"5 blade viscous" is a clutch fan. Go ahead and vote.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Electric.

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11.02 @ 120.56
http://www.youtube.com/watch?v=EAxRmoDgsdY
Chassis dyno
http://www.youtube.com/watch?v=wd6hFGzLJMc

None of the above. I'm all electric too...

Lou

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Home of Slant6-powered fun machines since 1988

No, there is no clutch. It's bolted directly to the pump.

Then it's not viscous, but solid. "Viscous" describes the fan clutch.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Yes, I also consider "viscous" a clutch fan. As far as electric goes, I just wanted to stick with the water pump mounted variety. Not too many votes happening, are we all electric or just short on opinion?

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I would never use a flex fan the last one I used was rated for 10,000 rpms and came apart at 6,000,puting a tear in my hood and a slice in my 150$ coil on my 73 charger the only perfect panel on a nice car. so my vote is clutch but a factory is fine if you don't mind exsesive drag

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Nick
86 d150 turbo /6.

There is no one correct answer. Too many variables. What ambiant temp range? type of vehicle (light or heavy, radiator clearence), A/C or not? fan shroud? Auto or standard? Size of the radiator? any mods to the engine? final drive ratio?

In general, if there is room, I like a 5 blade thermal clutch fan.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

I have one of these off and the shroud off an Aspen on my duster, that is a pretty nice combination...much nicer than the 7 blade clutch fan...

-D.Idiot

Electric

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