1968 z28 fan blade

**WILMASBOYL78** · #1 08-30-2007, 10:24 PM

[ QUOTE ]
My guess on the spacing would be for reduced vibration or noise levels. The odd spacing would break up beat frequencies caused by the fan turning through still or moving air.

Mike

[/ QUOTE ]

Not sure the spacing makes it quieter..the 69-70 BB Nova fans have the same type of staggered setup..they make a lot of noise!!!....most guys took them off back in the day and installed a flex fan.

wilma

**Kurt S** · #2 09-06-2007, 11:57 AM

The staggered spacing was for noise.
http://www.camaros.org/coolingsystems.shtml

**BARRY** · #3 09-08-2007, 05:59 PM

Hi: What are these fans worth?

**BARRY** · #4 09-08-2007, 06:44 PM

5 RIVETS WITH 68 STAMPED IN

3macs1 · #5 09-08-2007, 09:57 PM

[ QUOTE ]
Hi: What are these fans worth?

[/ QUOTE ]

I have sold on e-bay the 4 rivet, 5 blade small hole and bolt pattern for 125.00 and the 4 rivet large hole and bolt pattern for 1200-1600.00.
5 rivet I could not give them away. I seen a nos one 5 rivet close for 100.00.

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