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From my understanding it should be noted that a higher amp alternator can take more horsepower to operate. In the case of this conversion I understand it would only take more horsepower from the stock amperage up to the amperage of the larger alternator. In other works both alternators take the same amount of horsepower to operate up to the stock alternators 80 amps. After that the larger alternator would take more horsepower. Keep in mind this depends on load. If the load is minimal with batteries charged up, then the amount of HP required on either alternator is minimal. I think the mathematical figures are somewhere around 1 HP for every 50 amps. This figure would need to be adjusted for friction losses etc.
Bill
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If it ain't broke, fix it until it is.
97 40th
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