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Alternator crapped out

Discussion in '1969-1972 K5 Blazer | Truck | Suburban' started by aksidentproan, Jan 22, 2002.

  1. aksidentproan

    aksidentproan 1/2 ton status

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    Driving to get chineses food, in heavy snow, at night time.....WITH NO LIGHTS. The alternator went and I had to turn off the lights(so dim that they projected no light on the road) to make it up some of the steeper hills. Anyway I went to my auto parts store and ordered a new alternator and voltage regulator. The alternator, for $6 more, was a 62amp unit compared to the stock 40amp. I put it and the voltage regulator on in about an hour and what a difference 22amps makes!!!!!!!! My dixie horn now plays at the correct speed, my new halogen lights are 100% brighter, my interior lights are brighter and most importantly its more powerful!! The owner before me had converted to HEI without upgrading the rest of the electrical system. I can definatley say it was an extra $6 well spent.

    Another miracle product..........CARB AND CHOKE CLEANER!!!! I bought a can of it and sprayed until the can was empty....I can now read the "Quadrajet" name on the side, my choke works, and power delivery is much smoother.

    A long story short....it was an inexpensive but very productive weekend.[​IMG]

    1970 Blazer, <font color=orange>ORANGE</font color=orange>, 3-speed manual, NP205, 33" tires <a target="_blank" href=http://community.webshots.com/user/aksidentproan>http://community.webshots.com/user/aksidentproan</a>
     
  2. BluThndr71JMMY

    BluThndr71JMMY 1/2 ton status

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    Way cool.I didn't know you could upgrade the Alt amps with an external voltage regulator. If you could post your part numbers I could check on local availability of like products.Thanks.
     
  3. aksidentproan

    aksidentproan 1/2 ton status

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    I'll try to get those to you sometime today.

    Evan

    1970 Blazer, <font color=orange>ORANGE</font color=orange>, 3-speed manual, NP205, 33" tires <a target="_blank" href=http://community.webshots.com/user/aksidentproan>http://community.webshots.com/user/aksidentproan</a>
     
  4. aksidentproan

    aksidentproan 1/2 ton status

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    The voltage regulator is stock. Here is exactly what the label says on the alternator.

    <font color=blue>PRECISION
    7122 2CD01
    10DN 12v 63a N-ER

    1970 Blazer, <font color=orange>ORANGE</font color=orange>, 3-speed manual, NP205, 33" tires <a target="_blank" href=http://community.webshots.com/user/aksidentproan>http://community.webshots.com/user/aksidentproan</a>
     
  5. BluThndr71JMMY

    BluThndr71JMMY 1/2 ton status

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    Thanks.I may need one soon.
     
  6. 70jimmy

    70jimmy 3/4 ton status Premium Member GMOTM Winner

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    Maybe the 2nd Gen guys can chime in on this, I was just told that if you order an alternator for a 76 or newer chevy blazer or pickup it will be a 2 wire alternator and you can get it as high as 130 amps. anybody know about this?
     
  7. BluThndr71JMMY

    BluThndr71JMMY 1/2 ton status

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    I didn't want to delete the external voltage regulator, since I have 3 trucks w/ that system.
     

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