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What size altenator (amps)?????

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by TIGHTWORK82 K5, Sep 5, 2002.

  1. TIGHTWORK82 K5

    TIGHTWORK82 K5 1/2 ton status

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    Puting in new engine and I want to put in a new altenator what amperage do i need the auto part store says there is 2 for my year (82 k5) 60 and 80 amps, wich one? I have power windows and locks, a/c, stereo system, etc.
     
  2. bigjbear

    bigjbear 1 ton status Staff Member Moderator

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    you might want to think about 105 amp, ask for one form a Buick
     
  3. beater74

    beater74 1/2 ton status

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    hey Jim what kind of buick? is that what you are runnin?
     
  4. bigjbear

    bigjbear 1 ton status Staff Member Moderator

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    I think '87 Electra. I've got a 95 amp one from a Monte Carlo.
     
  5. beater74

    beater74 1/2 ton status

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    tanks /forums/images/icons/grin.gif
     
  6. dyeager535

    dyeager535 1 ton status Premium Member

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    http://tech.oldsgmail.com/echa_140a.html

    *disclaimer* not sure how difficult this will be to fit a Chev. IIRC, its just a matter of "clocking" the alternator between Olds and Chev applications. (unbolt the two halves, rotate one 90 degrees)
     
  7. MontanaLifted

    MontanaLifted 1/2 ton status

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    You definitley want something around 100 amps or higher if you plan on running lights or sound or anything electrical that's going to suck it up. Go as high on the amps as you can afford that'll keep the windshield wipers from slowing down at the red light, or the headlights dimming when you stop.

    When mine goes I'm going to put out for 120 or 140 amp monster.
     

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