Fan and Clutch Info - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**The Rocknrod** · 08-11-2018, 04:46 PM

Does anyone have information on what Heavy Duty Clutch Fan I should use with a 7 blade 18 inch fan. I looked at FAQ section = zip. The Truck Shop in Orange shows them in their catalog but no manufacturers part numbers.
I'm using a stock V8 fan shroud, short water pump, AC, Automatic. I'll even have I.O.L.

MikeN · 08-13-2018, 09:19 AM

Either the Hayden 2747 or 2797. More info here...

https://www.chevelles.com/forums/32-...an-clutch.html

MikeN · 08-13-2018, 09:21 AM

I'm using the Hayden 2747 in my 64 C10 with 350, short water pump, and 7-blade fan. I also use the exact same set up in my 65 Impala.

**The Rocknrod** · 08-13-2018, 11:26 AM

Thanks Mike, good info on the severe duty too. May go that way.

MikeN · 08-13-2018, 02:39 PM

No sweat, you're welcome. Also, I got my Hayden fan clutch on Amazon. Cheapest price I could find, no tax, and free shipping to Amazon Prime members.

**The Rocknrod** · 08-13-2018, 05:24 PM

Ya I joined Amazon and don't find the prices better than eBay on the same seller and I did upgrade also. So I guess it's all what system you want to buy from.
I'm thinking the 2797 is where I'm headed.
Thank you again.

AcampoDave · 08-14-2018, 09:39 AM

Quote:

Originally Posted by The Rocknrod

Ya I joined Amazon and don't find the prices better than eBay on the same seller and I did upgrade also. So I guess it's all what system you want to buy from.
I'm thinking the 2797 is where I'm headed.
Thank you again.

For the extreme duty?

**The Rocknrod** · 08-14-2018, 09:48 AM

Quote:

Originally Posted by AcampoDave

For the extreme duty?

Yes.

AcampoDave · 08-14-2018, 07:20 PM

That linked thread with posters talking about the noise it makes doesn't bother you? I use the 2747 here in central CA where we have plenty of triple digit days and have no problems even in traffic with the a/c on. Sometimes I hear the fan but not too bad.

**The Rocknrod** · 08-14-2018, 08:44 PM

It wont bother me.

MikeN · 08-15-2018, 10:28 AM

I used the 2797 in my 69 Chevelle with 496. I've since sold the car, but it didn't make any noise that was offensive. Drove it that way for years.

nxtruck · 08-15-2018, 12:38 PM

I recently put a mechanical fan setup back on my '65 and used a 17" 6-blade fan and a Hayden 2747 clutch. This is on a mild 355 using a long pump, custom shroud, and an aluminum 4-row radiator. It does fine everywhere except for idling in gear for long periods. I ordered a 2797 clutch to replace the 2747 with and hopefully help with the heating up at idle issue I'm having.

53chevyforever · 08-17-2018, 08:20 AM

Quote:

Originally Posted by nxtruck

I recently put a mechanical fan setup back on my '65 and used a 17" 6-blade fan and a Hayden 2747 clutch. This is on a mild 355 using a long pump, custom shroud, and an aluminum 4-row radiator. It does fine everywhere except for idling in gear for long periods. I ordered a 2797 clutch to replace the 2747 with and hopefully help with the heating up at idle issue I'm having.

I am using the Hayden extreme duty...I found a 7 blade Cadillac fan with
3 inch pitch and it really made a difference when idling for long periods in traffic here in Texas with ac on. Noise does not bother me...as long as it stays cool...nothing worse than overheating. I think the fan came from a 79 Cad Seville.

08-11-2018, 04:46 PM	#1
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Fan and Clutch Info Does anyone have information on what Heavy Duty Clutch Fan I should use with a 7 blade 18 inch fan. I looked at FAQ section = zip. The Truck Shop in Orange shows them in their catalog but no manufacturers part numbers. I'm using a stock V8 fan shroud, short water pump, AC, Automatic. I'll even have I.O.L. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

08-13-2018, 09:19 AM	#2
MikeN Registered User Join Date: Oct 2007 Location: Marietta, GA Posts: 805	Re: Fan and Clutch Info Either the Hayden 2747 or 2797. More info here... https://www.chevelles.com/forums/32-...an-clutch.html

08-13-2018, 09:21 AM	#3
MikeN Registered User Join Date: Oct 2007 Location: Marietta, GA Posts: 805	Re: Fan and Clutch Info I'm using the Hayden 2747 in my 64 C10 with 350, short water pump, and 7-blade fan. I also use the exact same set up in my 65 Impala.

08-13-2018, 11:26 AM	#4
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: Fan and Clutch Info Thanks Mike, good info on the severe duty too. May go that way. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

08-13-2018, 02:39 PM	#5
MikeN Registered User Join Date: Oct 2007 Location: Marietta, GA Posts: 805	Re: Fan and Clutch Info No sweat, you're welcome. Also, I got my Hayden fan clutch on Amazon. Cheapest price I could find, no tax, and free shipping to Amazon Prime members.

08-13-2018, 05:24 PM	#6
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: Fan and Clutch Info Ya I joined Amazon and don't find the prices better than eBay on the same seller and I did upgrade also. So I guess it's all what system you want to buy from. I'm thinking the 2797 is where I'm headed. Thank you again. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

08-14-2018, 07:20 PM	#9
AcampoDave Registered User Join Date: Feb 2013 Location: central California Posts: 2,775	Re: Fan and Clutch Info That linked thread with posters talking about the noise it makes doesn't bother you? I use the 2747 here in central CA where we have plenty of triple digit days and have no problems even in traffic with the a/c on. Sometimes I hear the fan but not too bad.

08-14-2018, 08:44 PM	#10
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: Fan and Clutch Info It wont bother me. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

08-15-2018, 10:28 AM	#11
MikeN Registered User Join Date: Oct 2007 Location: Marietta, GA Posts: 805	Re: Fan and Clutch Info I used the 2797 in my 69 Chevelle with 496. I've since sold the car, but it didn't make any noise that was offensive. Drove it that way for years.

08-15-2018, 12:38 PM	#12
nxtruck Registered User Join Date: Jun 2006 Location: Jackson, Mo. Posts: 607	Re: Fan and Clutch Info I recently put a mechanical fan setup back on my '65 and used a 17" 6-blade fan and a Hayden 2747 clutch. This is on a mild 355 using a long pump, custom shroud, and an aluminum 4-row radiator. It does fine everywhere except for idling in gear for long periods. I ordered a 2797 clutch to replace the 2747 with and hopefully help with the heating up at idle issue I'm having. __________________ Chris 1966 Chevy C10 LWB, 434 sbc, TH350, 12-bolt, factory suspension, pump gas 7.02 @ 95.8, 1.45 60' 1965 Chevy C10 LWB, 355 sbc, TH350, daily driver

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