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Discussion in 'GM Electrical Tech' started by Padre, Nov 28, 2009.

  1. Padre

    Padre Rockstar

    Does anyone know where i can get a heavy duty alternator for my 2009 Chevy Silverado 2500HD? My current alternator is a 160 amp Bosch that came from the factory. Thanks.
  2. unplugged

    unplugged Epic Member 5+ Years 1000 Posts

    You might want to specify what you mean by "heavy duty" but stop on by and see if they have what you need.

  3. Padre

    Padre Rockstar

    I want at least a 250 amp. I am running a lot of electronics: Plow, sander, amp, HID's, and I'm about to get an air horn.
  4. Crawdaddy

    Crawdaddy ↑↑↑ Has no life Staff Member 5+ Years 1000 Posts Platinum Contributor

    Taken from this page:

    I don't think you're really going to be able to get more than a 160ish alternator and actually produce the rated current without moving up to a bigger serpenteine belt. FireGuy's explanation on high-amp alternators make sense. You may want to consider moving up to a dual-alternator setup to get more power, but even then you may need a bigger belt to keep from shredding the belts.
  5. Padre

    Padre Rockstar

    Thanks Crawdaddy. I would have to change more than the alternator, I see!:grrrrrr:
  6. ZSI52

    ZSI52 Epic Member 5+ Years 500 Posts

    check out iraggi alternators.
  7. TritonBoulder47

    TritonBoulder47 Rockstar 4 Years 500 Posts

    +1... They are bad ass!!!

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