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Old 06-02-2015, 02:17 PM   #3
RichardJ
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Join Date: Apr 2010
Location: So Cal
Posts: 1,489
Re: How many amp Alt needed with Jeep fan mod?

A 93 Silverado would have had a CS130 with 104 Amps or higher. Next generation after the SI alternators.

The original gauge on your C10 is an Ammeter, not a volt meter.
With a hand held voltmeter, measure the battery voltage at the battery.
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'67 GMC 2500, 292, 4spd, AC
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