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Stock amp raing

Discussion in 'The Garage' started by adamforsythe, Feb 24, 2006.

  1. adamforsythe

    adamforsythe 1/2 ton status

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    What is the stock amp rating on a alt for a k5? I think I need a bigger one. When I have all my lights, radio, truck, etc on it starts to really hurt my power reading on my gauge. I have a NEW BIG a$$ battery to.
    Thanks
    Adam
     
  2. GM Man

    GM Man 1/2 ton status

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    When I bought a new alternator for my 78 Jimmy I got the "big" one at a whopping 61 amps, and it just barely keeps up...:haha:
     
  3. 1985_K5_Silverado

    1985_K5_Silverado 1/2 ton status

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    In '85, a 37 amp alt was standard for gas engine models, and a 66 amp alt (RPO K81) was optional. The diesels had the 66 amp alt as standard equipment. I have the 66 amp alt, but if it ever fries on me, I'll replace it with a 100 or 140 amp alt.
     
  4. cbbr

    cbbr 1 ton status GMOTM Winner

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    I just replaced mine with a 140a from NAPA. Took about 5 mins and costs about $140. It also has a lifetime warranty and they keep them in stock.
     
  5. adamforsythe

    adamforsythe 1/2 ton status

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    hahahahaha
    What amp rating should I get? I will be running a but load of lights, 10,000 LBS winch, Good heater, CB, a few new interior lights and equipment, a radio system (Won't really use it because I love the sound of my truck. But I still want one).
    Would I be smart to go with a dual batt set up also? Maby dual alt??????
     
  6. adamforsythe

    adamforsythe 1/2 ton status

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    I don't have a wife so I only have to worry about paying a few bills and building the good old K5. :D Is it possible to go too BIG?

     

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