Correct Thermal Clutch Fan
October 23rd, 2012, 04:24 PM
#1
1971 442 convert
Thread Starter
Join Date: Nov 2009
Location: Port Perry Ontario Canada
Posts: 487
Correct Thermal Clutch Fan
It's a 71 442 with a rebuilt 455, new 4 core rad, shroud with a 18" flex fan at the moment. It's runs around 180 to 190 at cruise speeds but once I slow down and get caught in any traffic it climbs fast and will boil over. If I get it back up to cruise speeds it goes back down really quick.
Was going to add an electric pusher that I could turn on as needed but after much research on here I think I will give the thermal clutch fan a try.
My question is which one? I saw on here that the Hayden HD 2747 worked great on a 1968 but they tell me it will not fit on my 455??
Can I get some help on which brand and number, and which fan will work best. I was thinking 18" or 19" and I here I need at least a 2" pitch.
Thanks for your help (as always)
Was going to add an electric pusher that I could turn on as needed but after much research on here I think I will give the thermal clutch fan a try.
My question is which one? I saw on here that the Hayden HD 2747 worked great on a 1968 but they tell me it will not fit on my 455??
Can I get some help on which brand and number, and which fan will work best. I was thinking 18" or 19" and I here I need at least a 2" pitch.
Thanks for your help (as always)
October 28th, 2012, 05:35 AM
#2
1971 442 convert
Thread Starter
Join Date: Nov 2009
Location: Port Perry Ontario Canada
Posts: 487
Ok still looking.
Originally I was talking with Summit and they were saying that the 2747 Hayden would not fit?
Been on Auto Zone and they list for my car
-Torqflo fan clutch 922747
-Torqflo 19" fan 983619
These must be Hayden products as the last 4 digits for both are the same as Haydens numbers?
Before I call does anyone have any experience with these?
Thanks,
Originally I was talking with Summit and they were saying that the 2747 Hayden would not fit?
Been on Auto Zone and they list for my car
-Torqflo fan clutch 922747
-Torqflo 19" fan 983619
These must be Hayden products as the last 4 digits for both are the same as Haydens numbers?
Before I call does anyone have any experience with these?
Thanks,
October 28th, 2012, 10:50 AM
#4
Full-time Taxpayer
Join Date: May 2010
Location: Texas
Posts: 386
You can use the following on the factory fan depending on your cooling needs:
Standard Duty:
Hayden 2705 Thermal Clutch
Heavy Duty:
Hayden 2747 Thermal Clutch
Severe Duty:
Hayden 2797 Thermal Clutch
I'm in Texas where its over 100 regularly I use the 2797 on a 70 455 with a 4 core radiator and factory shroud the hottest it gets is 190 in traffic. It normally runs between 170-185 depending how I'm driving it. I also have the 2747 and been meaning to try it but havent got around to it.
Standard Duty:
Hayden 2705 Thermal Clutch
Heavy Duty:
Hayden 2747 Thermal Clutch
Severe Duty:
Hayden 2797 Thermal Clutch
I'm in Texas where its over 100 regularly I use the 2797 on a 70 455 with a 4 core radiator and factory shroud the hottest it gets is 190 in traffic. It normally runs between 170-185 depending how I'm driving it. I also have the 2747 and been meaning to try it but havent got around to it.
Last edited by Qwik71442; October 28th, 2012 at 10:56 AM.
October 28th, 2012, 01:17 PM
#5
1971 442 convert
Thread Starter
Join Date: Nov 2009
Location: Port Perry Ontario Canada
Posts: 487
Thanks so much boys. Just wondered where you purchased them I'm from Canada so nothing easy LOL.
Roger
Roger
Last edited by 1971 442 convert; October 28th, 2012 at 01:45 PM.
October 28th, 2012, 01:47 PM
#6
Moderator
Join Date: Sep 2006
Location: Medford, Oregon
Posts: 13,684
Roger, I don't know if your concerned about the fan blades looking like what came originally. But if so I'm sure someone here would have a good used 6 blade fan if you created a parts wanted thread.
John
John
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