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(Yet Another) Alternator Question

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Old Dec 9, 2007 | 09:07 PM
  #1  
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ozyran
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(Yet Another) Alternator Question

Hello everyone,
I'm brand new to the site and already I'm finding it very helpful. I just picked up a 1986 F250 Supercab, long bed 4x2 and she's running a 351W with the C6 tranny.
Yes, I have searched extensively on my question. I even tried Ford's VIN decoder with no success.
I've searched high and low with no luck. Where do I find out the output of my truck's alternator? I need to replace the belt, but I figure it would also be good to know in case my alternator ever goes out.
Thanks!
~oz
 
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Old Dec 9, 2007 | 10:21 PM
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WA1986F-250
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I also have an 86 F250 Supercab, longbed 4x2 running the 351w and c6 tranny. Mine is a 70amp alternator which I believe is OEM spec. You should be able to swap it out for a higher output if need be, but anything the parts store sells for this setup should fit fine.
 
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Old Dec 9, 2007 | 11:10 PM
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plowpusher
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From: lino lakes, mn
look on the case of the alternator it's usually stamped look by the long bolt thatb goes to the block
 
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Old Dec 11, 2007 | 09:25 AM
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I went threw the same thing with my Bronco, Just bring your old belt to a parts store. That way you can verify the size.
 
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Old Dec 12, 2007 | 10:46 PM
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woodbutcher05
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From: LaFollette Tn
IIRC the factory stock rating is 40 amps.Most rebuilt alternators are 60.

Leo
 
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Old Dec 13, 2007 | 04:23 AM
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ozyran
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Originally Posted by Ford_Eddie_Bauer
I went threw the same thing with my Bronco, Just bring your old belt to a parts store. That way you can verify the size.
I was actually hoping to avoid that but I may not have any other choice.

Thanks for the help everyone!
 
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