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Thread: Excessive Amperage 250amp alt and overdrive alt pulley

  1. #1
    Join Date
    Mar 2010
    Location
    Tuscaloosa, AL
    Posts
    256

    Excessive Amperage 250amp alt and overdrive alt pulley

    I originally bought this a few years ago, but dont need it anymore. I just got it back from Nathan after the front pulley came loose, had it fixed and looked over (rebuilt) and sent back. Somewhere in shipping a piece of the case got cracked, but I still have the pieces if you want to glue it back. I honestly didnt notice it until a few days. This is a 250amp alt for 99-07 gm trucks/suvs, im not sure what else it will fit. I paid $430 for this 2 years ago.
    If you google excessive amperage youll see nathan is a highly respected alt dealer and makes a good product.

    Pulley sold, price on the alt dropped to $250 shipped OBO



    Last edited by Atomic; 06-04-2010 at 06:25 PM.

  2. #2
    Join Date
    Apr 2009
    Location
    42141
    Posts
    714
    how hard is it to change the front pulley?
    Blessed be the Lord my strength which teacheth my hands to war, and my fingers to fight:
    Psalms 144:1

    Si vis pacem, para bellum

  3. #3
    Join Date
    Dec 2008
    Location
    Newark, Delaware
    Posts
    343
    The pulley is easy to change out, I used a pneumatic impact gun and held the pulley with my hand and broke it loose. And the same with installing it.

    Bump for a good dude. Good luck with the sale.
    -RJ
    2K2 Silverado
    Who gives a damn any way??
    Black Bear Performance Tuned
    60'-2.485
    1/8-10.324@69.82
    1/4-15.88@89.10

  4. #4
    Join Date
    Mar 2010
    Location
    Tuscaloosa, AL
    Posts
    256
    changing the pulley takes under 30 seconds with an impact, very easy.

    i fixed the broken piece yesterday so everything is good to go

  5. #5
    Join Date
    Apr 2009
    Location
    42141
    Posts
    714
    so what do you mean the front pulley came loose... im jw here
    Blessed be the Lord my strength which teacheth my hands to war, and my fingers to fight:
    Psalms 144:1

    Si vis pacem, para bellum

  6. #6
    Join Date
    Mar 2010
    Location
    Tuscaloosa, AL
    Posts
    256
    the nut that holds the pulley on came loose so the pulley was rubbing the case since it was tilted down some. I sent it back to nathan and he replaced the pulley and case and sent it back to me, so everything is good now.

  7. #7
    Join Date
    Mar 2010
    Location
    Tuscaloosa, AL
    Posts
    256
    pulley sold and price dropped to $275 shipped obo

  8. #8
    Join Date
    May 2009
    Location
    hot & windy
    Posts
    1,117
    that sure puts my 105amp to shame!

    free bump
    00 FRC - just top end, exhaust, and a hot-air intake
    99 Sierra - 5.3 / 5spd
    ↓ click the pic for the build ↓

  9. #9
    Join Date
    Mar 2010
    Location
    Tuscaloosa, AL
    Posts
    256
    If you are seriously interested send me an offer

    Also willing to do a trade + cash for a 145a factory alt!

  10. #10
    Join Date
    May 2009
    Location
    hot & windy
    Posts
    1,117
    sorry, man - i got no use for it right now. my 105's plenty when i've only got 35W headlights, 3 speakers, and LED tails/interior.


    another free bump
    00 FRC - just top end, exhaust, and a hot-air intake
    99 Sierra - 5.3 / 5spd
    ↓ click the pic for the build ↓

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