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Re: Clutch fan or flex fan on your modified muscle car?
[Re: can.al]
#1049021
08/08/11 09:17 PM
08/08/11 09:17 PM
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Joined: Jan 2007
Posts: 7,664
IN
ahy
master
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master
Joined: Jan 2007
Posts: 7,664
IN
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Quote:
the stock 7 blade clutch fan was discontinued on some big block cars due to overheating at highway speeds.(i think the Daytonas)
the replacement in '70 was a mech 7 blade fan.
who have tried the performance 5 blade clutch ..i have heard it works excellent?
I've got the MP thermal clutch and "low drag" 5 blade fan and it does work very well. Cools a 496 "B" with AC. With AC running and long idling at 95+ degrees - say 15 min - it will warm up to 205. As soon as I get moving its back down to stat temp of 180. I have a bigger 7 blade fan from a '78 B engine Cordoba as backup but don't need it. The rest of the setup is: Mancini Muscle Car aluminum downflow radiator, shroud, MP HV water pump with anti cavitation plate overdriven about 7% and 180 degree high flow stat.
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Re: Clutch fan or flex fan on your modified muscle car?
[Re: GO_Fish]
#1049023
08/08/11 10:23 PM
08/08/11 10:23 PM
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Joined: Jan 2003
Posts: 70,126
Here
DirectSubjection
Tacohead. The First and Only
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Tacohead. The First and Only
Joined: Jan 2003
Posts: 70,126
Here
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Flex, no room for a clutch fan.
Ride eternal, shiny and chrome
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Re: Clutch fan or flex fan on your modified muscle car?
[Re: ahy]
#1049026
08/09/11 03:21 AM
08/09/11 03:21 AM
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Joined: Feb 2010
Posts: 18,493
Granite Bay CA
Kern Dog
Striving for excellence
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Striving for excellence
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
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Quote:
Thermal clutch fan + shroud. Works great.
I've been running a factory thermal clutch and a 5 blade fan, though I really should get a shroud on the radiator just in case. I've driven in 100 degree weather and the car never overheats, though it will run hotter than at night. Wait...I'll clarify: Nights here in Sacramento are far cooler than nights in Tucson or Scottsdale AZ. I was there last summer and it was 99 degrees at 11:00 PM !!
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Re: Clutch fan or flex fan on your modified muscle car?
[Re: Pyper70]
#1049029
08/09/11 08:37 AM
08/09/11 08:37 AM
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Joined: Jan 2003
Posts: 21,088
Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,088
Niles , Ohio
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Frankenduster I agree.Only fan I ever saw or had break was the stocker on my 65.That was when it was only 5 years old.My wife went to start it and bang.Blade sheared off.Took out the rad and nothing else.Flex fans are just like the clutchers.They can break anytime.Ran one on my old plow Jeep for probally 10 years.It had more miles than I care to remember.Rocky
Chrysler Firepower
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Re: Clutch fan or flex fan on your modified muscle car?
[Re: can.al]
#1049030
08/09/11 03:05 PM
08/09/11 03:05 PM
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Joined: Apr 2003
Posts: 3,968
North Riverside IL & Lowell IN
GTXKen
super gas
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super gas
Joined: Apr 2003
Posts: 3,968
North Riverside IL & Lowell IN
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Quote:
.. the Hayden 2765 or four season 36944 clutch units are about 2.6".....anybody try one,they're actually for an XJ6.
Thats what I run, it works ok but I'm not quite sure it locks up as well as I'd like it to.
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Oh, my flex fan has GOT to go. 
