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  #1  
Old 06-15-2023, 11:14 PM
Vetteman61 Vetteman61 is offline
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Default 80amp alternator on 71 Full Size Pontiac

The Build sheet states my car as alternator code "SP," but I can't find what this means anywhere on the internet.

My car is disassembled. I need to order new belts. It's a 1971 Grand Safari with the original 455. How can I tell if I have the 80 amp alternator, as it changes which belt I need.

  #2  
Old 06-15-2023, 11:17 PM
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thepontiacman thepontiacman is offline
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Brackets are different for 80amp alt.
Post pic of bkts.


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Old 06-15-2023, 11:35 PM
Vetteman61 Vetteman61 is offline
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Old 06-15-2023, 11:48 PM
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That looks like regular alt bkts.

I have 80 a set up off 73 gville.

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  #5  
Old 06-16-2023, 12:01 AM
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Most cars that had the rear window defogger had the larger (case) Amp alternators.

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  #6  
Old 06-16-2023, 08:46 AM
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Vetteman61,
Your pic definitely shows the standard '71-75 Pontiac V8 37-55 amp 10SI alt & bracket mounting.

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Old 06-18-2023, 06:22 PM
Vetteman61 Vetteman61 is offline
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Thank you

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