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Username Post: 77 alternator amp rating        (Topic#357618)
Posts: 732
Reg: 08-07-08
08-12-19 06:49 AM - Post#2773012    

Does anyone know what the original alternator amp rating was on a 77 C20 camper special?

Valued Contributor
Posts: 3573

Loc: Northeast CT
Reg: 06-27-10
08-12-19 08:01 AM - Post#2773022    
    In response to corvesy

Standard would be a 63 amp 10SI alternator, but it could be as much as a 80 amp 27SI alternator. Look for a part number and rating on your original one. If it is missing, the dealer might be able to pull up the manufacturing records by VIN. If you have a local starter/alternator shop, they can probably fix your old one better than buying one across the counter at the auto parts store. They usually use better components than the mass rebuilders that use a "one size fits all" type of rebuilding.

Never argue with an idiot. He'll drag you down to his level, then beat you with experience.

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