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)

 

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,

 

I run the 2747 on my 70 442.

Fit is bang on.

 

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.

 

Thanks so much boys. Just wondered where you purchased them I'm from Canada so nothing easy LOL.

Roger

 

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 thanks. I'm more concerned with the best fan to move the most air.

 

RockAuto has all 3 Haydens listed above

 

Thanks Qwik