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#1053233 - 09/06/17 02:20 AM Original Alternator Pulley Size  
Joined: Jun 2000
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BradTSS Offline
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BradTSS  Offline
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Joined: Jun 2000
Posts: 69
Granton, WI
Does anyone still have the original single groove alternator pulley on their 85 SS? If so, what are the dimensions of it?

#1053234 - 09/06/17 10:52 AM Re: Original Alternator Pulley Size [Re: BradTSS]  
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tedgley Offline
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tedgley  Offline
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Joined: May 2017
Posts: 34
Covington, KY
Originally Posted by BradTSS
Does anyone still have the original single groove alternator pulley on their 85 SS? If so, what are the dimensions of it?


I should have one. Exactly what dimensions are you wanting?

P.S. It will be late tonight before I could check it... but I have an 85 SS parts car that was complete when I parked it. Pulley should be there somewhere.

#1053240 - 09/06/17 03:41 PM Re: Original Alternator Pulley Size [Re: tedgley]  
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BradTSS Offline
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BradTSS  Offline
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Granton, WI
I don't know what dimensions I am looking for, that is what I am trying to figure out.
I am not sure if the pulley (which needs replacing) on my 78amp alternator is original. It's has a diameter of 76mm and a width of 18mm.

#1053247 - 09/07/17 10:39 AM Re: Original Alternator Pulley Size [Re: BradTSS]  
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tedgley Offline
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tedgley  Offline
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Covington, KY
Good news, bad news...

Long story short, I didn't have time to measure the part since yesterday, but I was able to confirm that it IS still there (pretty rusty though). I will have to swing by my shop tonight to get a dial caliper so I can get a good measurement.

Sorry to keep you waiting. If anybody else has these dimensions, feel free to step on my toes on this one...

#1053271 - 09/07/17 11:35 PM Re: Original Alternator Pulley Size [Re: BradTSS]  
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tedgley Offline
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tedgley  Offline
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Joined: May 2017
Posts: 34
Covington, KY
I just measured it. I came up with 75.8 mm diameter and 16.9 mm width. Pretty close. I'd say you've got a stock pulley there.


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