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90 blazer ?

Discussion in 'Chevy Trucks' started by mikelawtown, Dec 26, 2004.

  1. mikelawtown

    mikelawtown Senior Member
    from Mass
    Messages: 429

    I have a 90 full size blazer with pwr wind and locks, a/c 350 auto.anybody know what the amperage on a stock alt is and what amperage SHOULD i use.Just want more juice when im plowing with the heat cranked...Thanks
  2. ksland

    ksland Senior Member
    from ma
    Messages: 419

    My guess would be 85 amp. It all depends on the options with the truck. I would bump her up to a 110 or so.
  3. PackRat

    PackRat Member
    from Kansas
    Messages: 47

    I was thinking my 90 C1500 had a 120, factory. I could be confused with my 94 K.
    Anyhow, I'd put an older model on, for plowing. The newer ones aren't designed for sustained high output.

    When I wsa on PD, we had a 92 Caprice that had the package 120amp. It ate 2 a year, or so.