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Identifying High Output Alternator

Discussion in 'The Garage' started by willymonster, Jan 7, 2007.

  1. willymonster

    willymonster 1/2 ton status

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    does anybody know how to identify a high output alternator ? i was at picknpull today and saw alot of van/campers and was curious if they might have one but i dont know how to tell :confused:
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    All the Delco alternators I've ever seen have the rated output stamped on the cover (around the circumference, not front or rear) along with some other stuff, like "Delco" IIRC, as well as part numbers.

    If it's been rebuilt, many times this info is ground off. :(
     
  3. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    Even if it has been rebuilt it could have been built to put out more amps.
     
  4. dyeager535

    dyeager535 1 ton status Premium Member

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    True. I'm mainly talking about stuff in the wrecking yard. Alternators bought from Autozone, Checker, Schucks, Kragen, Pep Boys Etc., will oftentimes be found in wrecking yard vehicles, so it's common to come across new looking alternators with no idea what they actually are output-wise.

    Good thing about many wrecking yard vehicles, if it isn't there for theft or accident, many times they will have little used replacement parts...since so many people spend money on replacing parts randomly to solve problems, the same vehicle they just wasted money on they end up giving to wrecking yards because they couldn't fix it. :)
     
  5. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    How very true that is.
     
  6. willymonster

    willymonster 1/2 ton status

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    how lucky for us :D
     
  7. Metrodps

    Metrodps Strange but nice guy Premium Member GMOTM Winner Author

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    Many years ago (shows how long since I replaced one) they used to grind off the GM stamped info; now of days I can't tell ya.
     
  8. willymonster

    willymonster 1/2 ton status

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    oh ya so basicly the only way to tell if its high output is to take it apart ? i know they make those kits to convert and off the shelf ones but what to look for ? i dont have a clue :crazy:
     
  9. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

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    You could try to find one off of a commercial type GM vehicle, I don't know the part number or even the official name, but I was told they are large case GM altenators. That is what I have, rated at 100 amps. I guess the bigger case is designed to help handle more heat so the internals won't burn running near full bore.
     

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