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#1
08-28-2007, 06:00 PM
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Re: 1968 z28 fan blade
size...3 1/4" bolt spacing
 
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#2
08-28-2007, 08:09 PM
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Re: 1968 z28 fan blade
Don't mean to change the subject here but I have always wondered why the spacing on factory fan blades is not even.
James
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1968 Beaumont SD396
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#3
08-28-2007, 08:46 PM
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Re: 1968 z28 fan blade
OK, so who taught Charlie how to use a ruler? Figuring out that measurement involves higher math!
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#4
08-28-2007, 08:47 PM
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Re: 1968 z28 fan blade
LOL...Bigchevydaddy...The ruler was to show distance from bolt centers.
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#6
08-28-2007, 09:33 PM
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Re: 1968 z28 fan blade
Darn, and I was still stuck on the reference to hole diameters! ;-)
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#7
08-30-2007, 08:05 PM
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Re: 1968 z28 fan blade
i think air much like water, can cavitate if the blades were all spaced the same, i think the odd spaced blades move more air??
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Rich Straub raiv 69 judge, ra3 70 judge, 71 judge,74 SD trans am,71 cudas, 67 189 Corvette roadster, Quicksilver 68 HURST z-10 396 camaro, 69 HEMIBEE
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#8
08-30-2007, 08:20 PM
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Re: 1968 z28 fan blade
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
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