Old 07-07-2024, 01:51 PM
goatwgn goatwgn is offline
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Join Date: May 2010
Location: Chesapeake Va.
Posts: 1,389
Default Quietest clutch fan blade.

What do you all have experience with the quietest blades for a clutch fan, that doesn't sound like a bus on takeoff with the AC on?

Old 07-08-2024, 12:12 PM
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68 Firebird 68 Firebird is offline
Chief Ponti-yacker
Join Date: Apr 2001
Location: Colonia NJ USA
Posts: 966
Default Quiet fan blade

I have been running the fan from a 76 trans am
That originally was auto with air. I use the Hayden
Standard duty fan clutch and itís as quiet as a mouse
Both on highway and off. Using factory AC pulleys to
Overdrive fan aswell. Only see a few degrees over
Stat temp on highway on a long run. Come off highway
And back to stat temp!! It is a 7 blade staggered blade fan.


1968 Firebird 400, 068 cam, TH400 & 13" Continental Converter, Auburn posi with 3:08 factory gears, Cliff's Q-jet resting on a 68 factory iron intake, DUI HEI and Ram Air pans and RARE Long Branch Manifolds
Old 07-08-2024, 04:16 PM
goatwgn goatwgn is offline
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Join Date: May 2010
Location: Chesapeake Va.
Posts: 1,389

Thanks '68 Firebird. I will find a 7 blade staggered fan blade. I have the 6 blade fan on one of my cars, and although it cools well, it is quite loud at highway speed..

Old 07-08-2024, 11:09 PM
ZeGermanHam's Avatar
ZeGermanHam ZeGermanHam is offline
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Join Date: Nov 2016
Location: Seattle, WA
Posts: 1,975

On my '66, I use a 19.5" six-blade fan. To my knowledge, it's not a GTO part, but it was on my car when we bought it in the mid-90s. Works very well and does not make any noise even with with the HD fan clutch sold by Ames. It's also the very largest fan I can fit in the shroud, so I like knowing that I'm maximizing the available space.


1966 Pontiac GTO (restoration thread)
1998 BMW 328is (track rat)
2023 Subaru Crosstrek Limited (daily)
View my photos: Caught in the Wild
Old 07-09-2024, 10:56 PM
70GS455 70GS455 is offline
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Join Date: Oct 2002
Posts: 750

Loud means lots of airflow. Hopefully you don't have any cooling issues


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