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Thread: 40 amp mini alternator

  1. #1

    40 amp mini alternator

    i got a mini alternator that i did up 1 wire and mounted low in my chevette. anyways its gonna be a limited street/ track car. i`ve got a electric fan, msd, fuel pump, and my lights/directionals. i`ve got a optima battery . car might see 30 miles a week on the street. whats the thoughts on running only a 40 amp alternator.....its small, maybe trouble.

  2. #2
    Senior Member MASTER BUILDER
    Join Date
    Mar 2008

    mini altenator

    who makes it or what car is it from. also what bracket setup did you use to mount it and where did you mount it thanks art

  3. #3
    i gotta laugh a bit..its off a fork truck. i think its gm based. i`ve got a fabbed up bracket on the power steering boss holes and i have a chrome , large, semi horshoe adjustable arm that was meant to be used on a top mount set up in 1 original alternator boss in the head....looks a little odd first glance but the traditional low mount you buy wont fit my chassis. anyways.. i`m a little concerned if i take it to some cruise nites with no charge in between... 40 amps i would think should run ignition, fan, pump, and lights.

  4. #4
    Senior Member RACING JUNKIE
    Join Date
    Jan 2006
    not enough, you need an 85 amp 1 wire GM.



  5. #5
    Senior Member MASTER BUILDER
    Join Date
    Jan 2007
    Shelbyville Indiana
    I have a 35a Nippensdenso off a Toyota forklift on mine.

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