Fan Clutch on 1962 impala

[mike s]

Would a 1962 impala 409 have come from the factory with or without a fan clutch?

 

[55Brodie]

With.

 

[heddrik]

I love this forum, you can find things you never knew to ask! 5 blades wasn't it?

 

[pvs409]

yes all V-8's had 5 bladed fans.

 

[heddrik]

Thank you Mr. Paul.

 

[pvs409]

here are 61 to 64 original fan clutches and a original 5 bladed fan that I have.
Paul

 

[lennyjay]

yes all V-8's had 5 bladed fans.

Paul, replacing my thermal clutch....do you have a manufacture and part number for the fan clutch. All I can find is the std. duty fan clutch Hayden #2710. I would like a severe duty or heavy duty if available. It is a 409 motor, standard 5 blade, 409 shroud in place. My fan just spins when shut off, no drag......Thanks....

 

[pvs409]

I used this one from Show Cars on my 409, I actually removed it about 2 years ago, to see if it helped cooling
it was on a high horsepower 409 -530 HP stroker motor -it worked fine.
https://show-cars.com/product/1616

they have an expensive original one
https://show-cars.com/product/1619

Paul

 

[kiwi]

I found this information years ago on this site
Hayden Standard 2710
Heavy Duty 2747
Serve Heavy Duty 2797
I purchased the 2797 very noisy to start with but settled down and works good.

Steve

 

[lennyjay]

Thanks for the responses. May go with the heavy duty one from the chart above. Found the description from Hayden of what each fan clutch duty rating is. Thanks again.....

https://www.haydenauto.com/en/technicians-resources/faq-fan-clutches

 

[heddrik]

Is that the same size as a 327 in 62?

 

[Phil Reed]

Paul....why I'm thinking that 283 did not use a fan clutch?? Possibly 250HP 327 also??

 

[oldskydog]

Paul....why I'm thinking that 283 did not use a fan clutch?? Possibly 250HP 327 also??

And where might you look to find that info?

 

[Fuzz1957]

Paul....why I'm thinking that 283 did not use a fan clutch?? Possibly 250HP 327 also??

Phil,

I had a ’63 250 HP 327 out of 4 door Impala - it was all stock - it had clutch fan.

Fuzz

MAGA

 

[heddrik]

I just wondered if you could use a small block fan on a 409. With or without a fan clutch , I 'm not sure. Can't remember on my 62 250 hp 327 if it had a clutch or not.

 

[Don Jacks]

If the 250 horse car had A/C then yes they had one.My Dad had a 63 Impala wagon and then a 65 Impala same engine,and both cars had factory A/C,both cars had fan clutches.His 61 wagon that had a 170 horse 283,factory air had a fan clutch.A rough rule of thumb back then was if the car was equipped with A/C from the factory,they had a fan clutch on 283,327 engines.The non-A/C cars didn't unless a heavy duty cooling system option was used.

 

[Phil Reed]

Cecil....I sold all my yellow factory bulletins and factory literature, but I believe it is stored in the right rear hemisphere of my brain!!!!! Amazing......isn't it!!!!!

 

[oldskydog]

You don't need no steenkin books. it's all right here.

https://www.gmheritagecenter.com/gm-heritage-archive/vehicle-information-kits.html

 

[heddrik]

Either way then, the fan was the same, 283,327 and 409. Just some had clutch and some did not, correct?

 

[64ss409]

A fan that bolts to a water pump won't bolt to a clutch, it that is what you're asking.