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High amp alternator

Discussion in 'The Garage' started by drusky2k5, Jun 16, 2005.

  1. drusky2k5

    drusky2k5 Registered Member

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    Does anyone know about putting a higher amp alternator on a '94 Chevy Blazer? I've done some research and know the stock amp is 105 with a 130mm mounting bracket. It seems the highest you can go with the stock 130mm mount is 124 amp otherwise the heat and load is too much for the housing. I talked to one guy that has an alternator/autoelectric shop here locally that said he put a 144mm 140amp Escalade alternator on a '93 Suburban with a little mods (filing out the hole to fit the bolt). Anyone heard of doing this? He also said that with an upgrade kit (stator etc.) he can get it up to 200 amp. Any info or feedback would be great.
     
  2. DPI

    DPI 1/2 ton status

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    I have a 240 amp Powermaster in my '90 K5. This thing doesn't flinch at idle with all the accessories going including the air.

    Be careful upgrading a stock unit. They are not designed to dissipate the amount of heat a 200 amp alternator would create...
     
  3. drusky2k5

    drusky2k5 Registered Member

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    what kind?

    you say you have a 240 amp altern. in your '90 but how did you get it or where? were there any modifications you had to do to it to make it fit? the one my truck has stock is the 105 amp 130mm bracket size. the 240 you have what size is it?
     
  4. DPI

    DPI 1/2 ton status

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    I purchased it from a guy on the boards. OL14BLZ.

    Not sure where he got it. You can do a search for Powermaster using google or yahoo.

    It is a very large case. It bolted up and was plug and play. The only issue was the rear mount did not work. But the front two mounts seemed to be more than sufficient to hold it in place...
     
  5. darkshadow

    darkshadow 1 ton status

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    I had a simi local shop rebuld mine, for my 88 sub, had it DONE THE NEXT DAY, 40 extra amps, for less then half the price of a brand new one.


    perfect sevise, will always go to them!!!
     

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