Alternator Plating
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Racer
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Alternator Plating
www.vettepics.com/images/70/1970_silver_062805_thumb.jpg Hi, I have an alternator that will be rebuilt (1100884, 61 amp) in a 1970 350/300hp air conditioning car and would like to know if the fan is cad or zinc plated, I think the big block was silver cad plated. Thanks 
Last edited by JIMS1970VETTE; Aug 23, 2005 at 12:42 PM.
Le Mans Master
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From: Little Rock AR
Originally Posted by JIMS1970VETTE
www.vettepics.com/images/70/1970_silver_062805_thumb.jpg Hi, I have an alternator that will be rebuilt (1100884, 61 amp) in a 1970 350/300hp air conditioning car and would like to know if the fan is cad or zinc plated, I think the big block was silver cad plated. Thanks
-Mark.
Safety Car
Joined: Dec 1999
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From: PA
Originally Posted by JIMS1970VETTE
Hi, I have an alternator that will be rebuilt (1100884, 61 amp) in a 1970 350/300hp air conditioning car and would like to know if the fan is cad or zinc plated, I think the big block was silver cad plated.
As it was explained to me, the finish for the fan on 1968-1972 Corvette alternators is dependent on the build date of the alternator (not the car).
Alternators built prior to the 1970 calendar (not model) year typically have a fan that is painted a semi-gloss black... Those alternators built after the 1970 calendar year have a fan that is plated bright zinc. Therefore, you would expect to find black fans on early build 1970 Corvettes until they were depleted from inventory and zinc plated fans were used exclusively.
The application had nothing to do with the finish on the fan... The people assembling these alternators had no idea what engine/option car these would end up on.
Regards,
Thread Starter
Racer
Joined: Jun 2005
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Thank you for the info on the fan, as I am trying to restore the car and my local plating shop wants about $100 to do the fan, half to clean and half to plate in zinc, I am sure there are other options.Thanks again. 
Thread Starter
Racer
Joined: Jun 2005
Posts: 312
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Thank you for the info on the fan, as I am trying to restore the car and my local plating shop wants about $100 to do the fan, half to clean and half to plate in zinc, I am sure there are other options.Thanks again.
